Operating Hours & Seasons - Manhattan Project National Historical Park

 

HANFORD, WASHINGTON

There are numerous sites throughout the Tri-Cities that tell the Manhattan Project story that you can visit at any time. The National Park Service does not own or operate any of these sites except for our visitor center, so please check the individual sites for hours of operation.

Address

2000 Logston Blvd
Richland, WA 99354

Phone Number

(509) 376-1647
 
 

LOS ALAMOS, NEW MEXICO


Many of the sites and places associated with the Manhattan Project story in the town of Los Alamos can be visited year-round. The National Park Service does not manage any of these properties or facilities, save the visitor center, so please check with individual sites for additional information about when members of the public can visit.

Address

475 20th Street
Los Alamos, NM 87544

Phone Number

(505) 661-6277
 
 

OAK RIDGE, TENNESSEE

Many Manhattan Project sites throughout the City of Oak Ridge are open year-round. The National Park Service does not manage any of these sites with the exception of the Oak Ridge Visitor Center, located within the Children’s Museum of Oak Ridge. Please contact all other points of interest directly for more information on operating hours and admission. The Oak Ridge Visitor Center hours operate in unison with the Children’s Museum of Oak Ridge.

Visitor Center

The Oak Ridge Visitor Center operates with these standard hours:

Summer Hours (June through August)

10:00 am to 4:00 pm Tuesday through Saturday
1:00 pm to 4:00 pm Sunday
Closed Monday

Winter Hours (September through May)

10:00 am to 4:00 pm Tuesday through Saturday
1:00 pm to 4:00 pm Sunday
Closed Monday

Closed: Thanksgiving, Christmas Eve, Christmas Day, New Year’s Eve, New Years Day, MLK Day, Easter Sunday, Memorial Day, 4th of July, and Labor Day

Occasional unplanned closures may occur due to weather or staffing issues.

Address

461 W. Outer Drive
Oak Ridge, TN 37830

Phone Number

(865) 482-1942

 

Last updated: June 19, 2026

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Contact Info

Mailing Address:

National Park Service, Manhattan Project National Historical Park
c/o NPS Intermountain Regional Office
One Denver Federal Center, Building 50

Denver, CO 80225-0287

Phone:

Hanford: 509.376.1647
Los Alamos: 505.661.6277
Oak Ridge: 865.482.1942

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