National Historical Parks · New Mexico, Tennessee, and Washington
Manhattan Project National Historical Park
National Park Service source material · single source. Source dates and reuse information are available beside each field.
Check the official park website for current access, conditions and visitor information.
Introduction
Background: 1
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.
Geography
Visitor centers and places
Oak Ridge Visitor Center: 5
The Oak Ridge Visitor Center is located in the Children's Museum of Oak Ridge. Visitor Center services are limited on Sundays, but brochures, maps, and site films are available. The Visitor Center is closed on: New Year’s Eve, New Year's Day, Easter, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Eve, and Christmas Day.
Visitor information
Physical Address: 6
National Park Service, Manhattan Project National Historical Park c/o NPS Intermountain Regional Office P.O. Box 25287
Denver, CO 80225-0287
Mailing Address: 7
National Park Service, Manhattan Project National Historical Park c/o NPS Intermountain Regional Office P.O. Box 25287
Denver, CO 80225-0287
Telephone: 8
Visitation
Sources & field notes
Source records (9)
Select a numbered reference to open a source card. Retrieval dates describe this edition’s source capture, rather than an independent verification or the date of the underlying information.
Background · Official park structured information. Open source ↗
- Information date
- Not supplied by the source
- Retrieved
- 2026-10-30
- Evidence
- Single source; not independently corroborated.
- Reuse
- NPS-supplied text; NPS-authored government work generally public domain, subject to third-party rights.
X-10 Graphite Reactor Exterior · NPS. Open source ↗
- Information date
- Not supplied by the source
- Retrieved
- 2026-10-30
- Catalog image date
- 05/04/2016
- Source scope
- Manhattan Project National Historical Park
- Evidence
- Single source; not independently corroborated.
- Reuse
- Public domain:Full Granting Rights
- Rights
- Public domain:Full Granting Rights
Designation · National Park System directory. Open source ↗
- Information date
- Not supplied by the source
- Retrieved
- 2026-10-30
- Evidence
- Single source; not independently corroborated.
- Reuse
- Factual reference data; source attribution retained.
State or territory · National Park System directory. Open source ↗
- Information date
- Not supplied by the source
- Retrieved
- 2026-10-30
- Evidence
- Single source; not independently corroborated.
- Reuse
- Factual reference data; source attribution retained.
Oak Ridge Visitor Center · National Park Service park structured data. Open source ↗
- Information date
- Not supplied by the source
- Retrieved
- 2026-10-30
- Evidence
- Single source; not independently corroborated.
- Reuse
- NPS-supplied text; NPS-authored U.S. government work is generally public domain, subject to third-party rights.
Physical Address · Official park structured information. Open source ↗
- Information date
- Not supplied by the source
- Retrieved
- 2026-10-30
- Evidence
- Single source; not independently corroborated.
- Reuse
- NPS-supplied text; NPS-authored government work generally public domain, subject to third-party rights.
Mailing Address · Official park structured information. Open source ↗
- Information date
- Not supplied by the source
- Retrieved
- 2026-10-30
- Evidence
- Single source; not independently corroborated.
- Reuse
- NPS-supplied text; NPS-authored government work generally public domain, subject to third-party rights.
Telephone · Official park structured information. Open source ↗
- Information date
- Not supplied by the source
- Retrieved
- 2026-10-30
- Evidence
- Single source; not independently corroborated.
- Reuse
- NPS-supplied text; NPS-authored government work generally public domain, subject to third-party rights.
Recreation visits · National Park Service Visitor Use Statistics. Open source ↗
- Information date
- 2025
- Retrieved
- 2026-10-30
- Methodology
- NPS reporting unit; annual total is the sum of 12 monthly recreation visit estimates.
- Reporting unit
- Manhattan Project NHP
- Evidence
- Single source; not independently corroborated.
- Reuse
- Factual reference data; source attribution retained.