Manhattan Project National Historical Park

SELECTED RECORD

Manhattan Project National Historical Park

The Manhattan Project is one of the most transformative events of the 20th century. It ushered in the nuclear age with the development of the world’s first atomic bombs. Most of this development took place in three secret communities located in Hanford, WA, Los Alamos, NM and Oak Ridge, TN. Today, you can visit these three sites that make up Manhattan Project National Historical Park.

Activities: Guided Tours · Junior Ranger Program · Museum Exhibits · Park Film

Monthly recreation visits · 2025

January
3,375
February
3,729
March
6,610
April
5,321
May
6,991
June
6,407
July
7,751
August
5,915
September
4,649
October
297
November
2,260
December
3,085

Annual recreation visits · 1979–2025

2016
104,715
2017
89,599
2018
69,543
2019
79,870
2020
11,392
2021
26,063
2022
27,265
2023
60,100
2024
74,693
2025
56,390

Published entrance fees

No fee entries were supplied in this snapshot. Check the official park page.

Published passes

No fee entries were supplied in this snapshot. Check the official park page.

Published operating hours

Hanford Visitor Center · The Hanford Visitor Center is open Monday - Friday 9:00 AM-4:00 PM. Access to the Hanford B Reactor is suspended due to major construction projects. To check for updates about these tours, visit http://manhattanprojectbreactor.hanford.gov/. Separate tours of the Historic Sites are offered beginning in May. For more information about these tours, visit http://tours.hanford.gov/HistoricTours/.

Los Alamos Visitor Center · While there is currently no public access to the Department of Energy facilities in Los Alamos, walking tours are available in the town of Los Alamos. The Los Alamos Visitor Center is open Friday through Monday, 10 am to 3 pm.

Oak Ridge Visitor Center · The Oak Ridge Visitor Center is located within the Children's Museum of Oak Ridge. Here you are able to speak with National Park Service rangers, watch a short film on the Manhattan Project, and get literature on Manhattan Project-related historic sites throughout Oak Ridge. Visitor Center services are limited on Sundays, but brochures, maps, and site films are available.

Fees, facilities and activities are the 2026-10-03 NPS snapshot. Historical visitation describes recorded visits, not crowding forecasts or present conditions.

Plan your visit

The Manhattan Project National Historical Park has units in Hanford, WA, Los Alamos, NM, and Oak Ridge, TN. Check local weather conditions at each unit before you visit.

Official directions ↗

Campgrounds (0)

Official NPS information and current conditions ↗

Download profile records as CSV ↓Read sources and definitions ↓

130 matching records · Recreation visits
Place / record	Recreation visits	Context	Explore
Manhattan Project National Historical Park	104,715	2016 annual recreation visits	Source record
Manhattan Project National Historical Park	89,599	2017 annual recreation visits	Source record
Manhattan Project National Historical Park	79,870	2019 annual recreation visits	Source record
Manhattan Project National Historical Park	74,693	2024 annual recreation visits	Source record
Manhattan Project National Historical Park	69,543	2018 annual recreation visits	Source record
Manhattan Project National Historical Park	60,100	2023 annual recreation visits	Source record
Manhattan Project National Historical Park	56,390	2025 annual recreation visits	Source record
Manhattan Project National Historical Park	27,265	2022 annual recreation visits	Source record
Manhattan Project National Historical Park	26,063	2021 annual recreation visits	Source record
Manhattan Project National Historical Park	16,104	July 2016 recreation visits	Source record
Manhattan Project National Historical Park	12,850	August 2017 recreation visits	Source record
Manhattan Project National Historical Park	12,265	September 2016 recreation visits	Source record
Manhattan Project National Historical Park	11,624	July 2019 recreation visits	Source record
Manhattan Project National Historical Park	11,392	2020 annual recreation visits	Source record
Manhattan Project National Historical Park	11,259	October 2016 recreation visits	Source record
Manhattan Project National Historical Park	11,109	June 2016 recreation visits	Source record
Manhattan Project National Historical Park	10,875	June 2019 recreation visits	Source record
Manhattan Project National Historical Park	10,630	August 2016 recreation visits	Source record
Manhattan Project National Historical Park	10,394	July 2024 recreation visits	Source record
Manhattan Project National Historical Park	10,304	July 2017 recreation visits	Source record
Manhattan Project National Historical Park	9,875	June 2017 recreation visits	Source record
Manhattan Project National Historical Park	9,584	July 2018 recreation visits	Source record
Manhattan Project National Historical Park	9,473	August 2019 recreation visits	Source record
Manhattan Project National Historical Park	9,411	April 2016 recreation visits	Source record
Manhattan Project National Historical Park	9,363	June 2024 recreation visits	Source record
Manhattan Project National Historical Park	9,358	May 2019 recreation visits	Source record
Manhattan Project National Historical Park	9,068	May 2016 recreation visits	Source record
Manhattan Project National Historical Park	8,897	May 2017 recreation visits	Source record
Manhattan Project National Historical Park	8,834	October 2024 recreation visits	Source record
Manhattan Project National Historical Park	8,812	March 2016 recreation visits	Source record
Manhattan Project National Historical Park	8,521	June 2018 recreation visits	Source record
Manhattan Project National Historical Park	8,470	May 2024 recreation visits	Source record
Manhattan Project National Historical Park	8,436	April 2017 recreation visits	Source record
Manhattan Project National Historical Park	8,416	October 2019 recreation visits	Source record
Manhattan Project National Historical Park	8,317	July 2023 recreation visits	Source record
Manhattan Project National Historical Park	8,284	October 2017 recreation visits	Source record
Manhattan Project National Historical Park	8,055	September 2019 recreation visits	Source record
Manhattan Project National Historical Park	7,751	July 2025 recreation visits	Source record
Manhattan Project National Historical Park	7,745	October 2018 recreation visits	Source record
Manhattan Project National Historical Park	7,740	August 2024 recreation visits	Source record
Manhattan Project National Historical Park	7,580	September 2017 recreation visits	Source record
Manhattan Project National Historical Park	7,495	August 2018 recreation visits	Source record
Manhattan Project National Historical Park	7,369	October 2023 recreation visits	Source record
Manhattan Project National Historical Park	7,154	April 2024 recreation visits	Source record
Manhattan Project National Historical Park	7,132	June 2023 recreation visits	Source record
Manhattan Project National Historical Park	7,057	March 2017 recreation visits	Source record
Manhattan Project National Historical Park	7,035	September 2024 recreation visits	Source record
Manhattan Project National Historical Park	6,991	May 2025 recreation visits	Source record
Manhattan Project National Historical Park	6,939	September 2018 recreation visits	Source record
Manhattan Project National Historical Park	6,889	April 2019 recreation visits	Source record
Manhattan Project National Historical Park	6,773	August 2023 recreation visits	Source record
Manhattan Project National Historical Park	6,758	September 2023 recreation visits	Source record
Manhattan Project National Historical Park	6,610	March 2025 recreation visits	Source record
Manhattan Project National Historical Park	6,491	May 2018 recreation visits	Source record
Manhattan Project National Historical Park	6,407	June 2025 recreation visits	Source record
Manhattan Project National Historical Park	6,148	November 2016 recreation visits	Source record
Manhattan Project National Historical Park	6,134	April 2023 recreation visits	Source record
Manhattan Project National Historical Park	5,915	August 2025 recreation visits	Source record
Manhattan Project National Historical Park	5,804	November 2017 recreation visits	Source record
Manhattan Project National Historical Park	5,724	May 2023 recreation visits	Source record
Manhattan Project National Historical Park	5,677	April 2018 recreation visits	Source record
Manhattan Project National Historical Park	5,672	March 2018 recreation visits	Source record
Manhattan Project National Historical Park	5,595	March 2024 recreation visits	Source record
Manhattan Project National Historical Park	5,321	April 2025 recreation visits	Source record
Manhattan Project National Historical Park	4,930	March 2019 recreation visits	Source record
Manhattan Project National Historical Park	4,766	November 2019 recreation visits	Source record
Manhattan Project National Historical Park	4,649	September 2025 recreation visits	Source record
Manhattan Project National Historical Park	4,222	November 2024 recreation visits	Source record
Manhattan Project National Historical Park	4,220	July 2021 recreation visits	Source record
Manhattan Project National Historical Park	4,156	November 2018 recreation visits	Source record
Manhattan Project National Historical Park	4,120	October 2022 recreation visits	Source record
Manhattan Project National Historical Park	4,031	March 2023 recreation visits	Source record
Manhattan Project National Historical Park	3,785	December 2016 recreation visits	Source record
Manhattan Project National Historical Park	3,783	February 2020 recreation visits	Source record
Manhattan Project National Historical Park	3,729	February 2025 recreation visits	Source record
Manhattan Project National Historical Park	3,703	December 2017 recreation visits	Source record
Manhattan Project National Historical Park	3,681	February 2017 recreation visits	Source record
Manhattan Project National Historical Park	3,429	September 2022 recreation visits	Source record
Manhattan Project National Historical Park	3,375	January 2025 recreation visits	Source record
Manhattan Project National Historical Park	3,372	February 2018 recreation visits	Source record
Manhattan Project National Historical Park	3,285	February 2016 recreation visits	Source record
Manhattan Project National Historical Park	3,274	June 2022 recreation visits	Source record
Manhattan Project National Historical Park	3,270	October 2021 recreation visits	Source record
Manhattan Project National Historical Park	3,254	November 2023 recreation visits	Source record
Manhattan Project National Historical Park	3,245	June 2021 recreation visits	Source record
Manhattan Project National Historical Park	3,128	January 2017 recreation visits	Source record
Manhattan Project National Historical Park	3,085	December 2025 recreation visits	Source record
Manhattan Project National Historical Park	2,909	August 2021 recreation visits	Source record
Manhattan Project National Historical Park	2,901	November 2022 recreation visits	Source record
Manhattan Project National Historical Park	2,898	January 2020 recreation visits	Source record
Manhattan Project National Historical Park	2,845	July 2022 recreation visits	Source record
Manhattan Project National Historical Park	2,839	January 2016 recreation visits	Source record
Manhattan Project National Historical Park	2,748	December 2024 recreation visits	Source record
Manhattan Project National Historical Park	2,690	February 2019 recreation visits	Source record
Manhattan Project National Historical Park	2,539	August 2022 recreation visits	Source record
Manhattan Project National Historical Park	2,439	September 2021 recreation visits	Source record
Manhattan Project National Historical Park	2,389	December 2019 recreation visits	Source record
Manhattan Project National Historical Park	2,342	November 2021 recreation visits	Source record
Manhattan Project National Historical Park	2,294	December 2021 recreation visits	Source record
Manhattan Project National Historical Park	2,260	November 2025 recreation visits	Source record
Manhattan Project National Historical Park	2,222	February 2024 recreation visits	Source record
Manhattan Project National Historical Park	2,131	April 2022 recreation visits	Source record
Manhattan Project National Historical Park	2,080	January 2018 recreation visits	Source record
Manhattan Project National Historical Park	2,004	May 2022 recreation visits	Source record
Manhattan Project National Historical Park	1,854	February 2023 recreation visits	Source record
Manhattan Project National Historical Park	1,811	December 2018 recreation visits	Source record
Manhattan Project National Historical Park	1,758	December 2023 recreation visits	Source record
Manhattan Project National Historical Park	1,634	March 2022 recreation visits	Source record
Manhattan Project National Historical Park	1,450	May 2021 recreation visits	Source record
Manhattan Project National Historical Park	1,261	March 2021 recreation visits	Source record
Manhattan Project National Historical Park	1,256	March 2020 recreation visits	Source record
Manhattan Project National Historical Park	1,215	December 2022 recreation visits	Source record
Manhattan Project National Historical Park	1,072	April 2021 recreation visits	Source record
Manhattan Project National Historical Park	1,054	February 2021 recreation visits	Source record
Manhattan Project National Historical Park	996	January 2023 recreation visits	Source record
Manhattan Project National Historical Park	916	January 2024 recreation visits	Source record
Manhattan Project National Historical Park	737	February 2022 recreation visits	Source record
Manhattan Project National Historical Park	620	September 2020 recreation visits	Source record
Manhattan Project National Historical Park	569	June 2020 recreation visits	Source record
Manhattan Project National Historical Park	569	July 2020 recreation visits	Source record
Manhattan Project National Historical Park	564	November 2020 recreation visits	Source record
Manhattan Project National Historical Park	530	August 2020 recreation visits	Source record
Manhattan Project National Historical Park	507	December 2020 recreation visits	Source record
Manhattan Project National Historical Park	507	January 2021 recreation visits	Source record
Manhattan Project National Historical Park	436	January 2022 recreation visits	Source record
Manhattan Project National Historical Park	405	January 2019 recreation visits	Source record
Manhattan Project National Historical Park	297	October 2025 recreation visits	Source record
Manhattan Project National Historical Park	96	October 2020 recreation visits	Source record
Manhattan Project National Historical Park	0	April 2020 recreation visits	Source record
Manhattan Project National Historical Park	0	May 2020 recreation visits	Source record

SOURCES & DEFINITIONS

Know what the map counts.

Source: National Park Service API for sites, facilities, campground locations and published fee entries; NPS Public Use Statistics for monthly recreation visits, 1979–2025. Snapshot retrieved 2026-10-03. 474 NPS site records include 62 national-park API records; Sequoia and Kings Canyon share one API record. These record counts are not the official count of individually designated parks. 392 API site records have matched visitation history, including the separately reported Sequoia and Kings Canyon visit totals combined for their shared API record. 665 campgrounds are included.

Complete monthly series reconcile with the source’s annual totals. Published annual totals remain available for years with partial monthly reporting. Four monthly entries contain negative accounting corrections. They remain in the archived data and annual totals, and are unavailable as ordinary monthly visit counts. Blank data is not zero. Recreation visits are visits, not unique people. Month as percent of annual peak = selected month visits ÷ largest monthly count that year × 100, requiring twelve nonnegative monthly values. This helps compare recorded seasonality; it is not a crowding forecast, reservation forecast, or present-condition report.

Activities and amenities reflect published NPS entries, rather than a guarantee of access on a particular day. Fees and pass categories are dated 2026-10-03; official site and reservation links provide current conditions and rules. Campground points are published NPS coordinates. Offshore sites can be viewed on the world extent. Broader public-land agencies are outside this reviewed NPS snapshot.

World outlines: Natural Earth 1:50m map units, public domain. U.S. state outlines: Census via us-atlas. Source licenses apply to their respective inputs and derived data. Download the derived parks snapshot · Source manifest, retrieval dates and SHA-256 hashes.

Archived inputs and attribution (14)

nps-parks.json · National Park Service · NPS federal data; media rights vary by credit · retrieved 2026-10-03 · 3,921,936 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 29b719dea3c3361c4ef1d7c0f068da09ee366e5335907442453b08db7737072b
nps-campgrounds.json · National Park Service · NPS federal data; media rights vary by credit · retrieved 2026-10-03 · 3,464,748 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 9762634332c69e5ed729fbe4751a163cab534722c07c7e595b857e9a372b75e3
nps-campgrounds-500.json · National Park Service · NPS federal data; media rights vary by credit · retrieved 2026-10-03 · 967,966 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 4160009fb0ddc173680428bba03b765398deeca9d303a518821967c7db5fea20
nps-visitation-2025-2025.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 1,071,221 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 878c51940ae94a29c7e47518d2321713e6d48ad9b008408530723745ca5fab5a
nps-visitation-2021-2024.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 4,209,731 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 508548d54089885eb78af5a81c63856ba289c01ee8f39c2d096267b3cf9ce243
nps-visitation-1979-1983.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 3,868,488 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 494795b9ffb6da1f00e10614cde87ef8b18aca67e9c504c2196ba0346c21ddd7
nps-visitation-1984-1988.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 4,171,732 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: cd6e3b86c83ecc9ab11d123ea8f560f0590446020fe66eea21e272eb8d931eb7
nps-visitation-1989-1993.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 4,393,574 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 22960690990cec0c7af0e7a55d87ef7ee3d8a116afd81bf753c821f65e50ad00
nps-visitation-1994-1998.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 4,538,236 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: c021fdd6108c9d3e1047b954376cf8e01c4f8abf0f327dfe081596dff7939e48
nps-visitation-1999-2003.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 4,704,673 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: da3f808031e6f26e1e36c42cc11403b415e24e67844762ac51f33998d2c1cd5f
nps-visitation-2004-2008.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 4,844,655 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 373f1d9ae9eff33e2e73b3bfc26d26c6504d2f831fc5b41c5c1e3df7bade6047
nps-visitation-2009-2013.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 4,928,350 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 968591a7dd40985cc44fea48568b8a0880953c7b982b328a6c88077d064c12c2
nps-visitation-2014-2018.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 5,057,268 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 76f1e2173bee73eee3550e4e2e3a987e19d67d4f6841c9c726fa412360a3fb20
nps-visitation-2019-2020.csv · National Park Service · NPS federal data · retrieved 2026-10-03 · 2,028,678 uncompressed bytes. Published source · Archived input (gzip)
SHA-256: 661d426529aa1b5771d52e29c90758b943edf883fa8e1f9c53f76851e450e5f1