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Destinations › … › United States › New Mexico

Manhattan Project National Historical Park

calendar_monthApr–May, Sep–Octbest time schedule2 daysplan for child_careYeswith kids confirmation_numberFreeentry
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The Manhattan Project National Historical Park commemorates the development of the atomic bomb during World War II. It includes sites in Los Alamos, New Mexico, where scientists worked on this pivotal project, and serves as a reminder of the complex legacy of nuclear science.

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Visitors come to learn about the historical significance of the project and its impact on modern warfare and international relations. The park offers educational exhibits and guided tours that provide insight into the lives of those who contributed to this monumental effort.

In pictures

Gray factory building like stacked boxes with single taller smokestack beneath cloudy blue skies.
Gray factory building like stacked boxes with single taller smokestack beneath cloudy blue skies.

Things to do

Hanford: Bike and Walk the Sacagawea Heritage Trail
1-4 Hours · Winter/Spring

This recreational trail along the Columbia River is a perfect way to explore the Tri-Cities on foot and bike....
Hanford: Attend a B Reactor Tour
4 Hours · Spring/Summer

The US Department of Energy provides guided tours of the B Reactor. These tours provide a glimpse into the sci...
Los Alamos: Tour Behind the Fence
4 Hours · Spring/Fall

Take a tour behind the fence of the Los Alamos National Laboratory.
Oak Ridge: Join a Ranger Program
1-4 Hours · Winter/Spring

Oak Ridge ranger programs are a great way to explore the remarkable history of the Manhattan Project. Follow t...
Oak Ridge: Experience a Guided Tour Behind the Fence
3 Hours · Spring/Summer

Guided bus tours of Manhattan Project sites in Oak Ridge provide visitors an intimate behind-the-scenes glimps...
Hanford: Visit the Museum at Keewaydin
2 Hours · Winter/Spring

Located in Kennewick's oldest park, the Museum at Keewaydin shares the history of east Benton County and commu...
Hanford: Visit LIGO
2 Hours · Winter/Spring

The Laser Interferometer Gravitational-wave Observatory (LIGO) is a modern example of cutting-edge research th...
Oak Ridge: Visit the Oak Ridge History Museum
Winter/Spring

The Oak Ridge History Museum, opened in 2019, houses a wealth of exhibits dedicated to the human history of Oa...
Hanford: Visit Nez Perce National Historical Park
2-4 Hours · Winter/Spring

Since time immemorial, the Nimiipuu (Nez Perce) people have relied on the valleys, prairies, mountains, and pl...
Hanford: Join a Ranger Program
1-3 Hours · Spring/Summer

Ranger programs and Junior Ranger events are a great way for families and kids to learn about the Manhattan Pr...
Alamogordo: Visit the Trinity Site
1-6 Hours · Spring/Fall

Two times a year, visitors are allowed to see the place where history was made at the Trinity Site. Run by the...
Hanford: Visit the REACH Museum
1-2 Hours · Winter/Spring

At The REACH Museum, you can learn about the natural and human history of the Tri-Cities. The museum houses ro...

Practical

At a glance

Established
2015
Open
9 AM to 5 PM daily, closed on federal holidays
Accessibility
mostly wheelchair accessible
Address
National Park Service, Manhattan Project National Historical Park, Denver, CO 80225-0287
Opening hours
9 AM to 5 PM daily, closed on federal holidays
Phone
Hanford: 509.376.1647
Price
Free
Website
www.nps.gov

Things to know

Expect potential queues during peak tourist seasons.
Tickets are required for some guided tours, so check availability in advance.
Plan your visit around the park's limited hours, especially in winter.
Dress comfortably for outdoor walking and varying weather conditions.

Photo: US Department of Energy/Ed Westcott