Manhattan Project National Historical Park

This park commemorates the Manhattan Project, a research and development venture operated during World War II to produce the first nuclear weapons. This operation eventually led to the Japanese bombings in Hiroshima and Nagasaki. The Manhattan Project National Historical Park has three units: one in Los Alamos, New Mexico, one in Oak Ridge, Tennessee, and another in Hanford, Washington. You can tour some historical sites along the park, such as the B Reactor National Historic Landmark, X-10 Graphite Reactor, and Gun Site Facilities. The Manhattan Project National Historical Park is open throughout the year, with working days regulated according to the seasons. 

Things to Do

Things To Do Near Manhattan Project National Historical Park

Visiting the Manhattan Project National Historical Park involves touring three cities, Hanford in Washington, Oak Ridge in Tennessee, and Los Alamos in New Mexico. Having an RV ensures you can easily reach all the sites within these states for the complete Manhattan Project experience. Driving to historical sites and museums allows you to enjoy the exhibitions and learn about the nuclear development history without mismanaging your time. Additionally, the park's location within significant cities makes it more comfortable to find parking spaces around the area so you can explore the site and surrounding areas further. 

Hiking Trails



Nearby Shops and Restaurants

map-marker-alt-regular How to Get There

How To Get To Manhattan Project National Historical Park

To get to the Manhattan Project National Historical Park in Los Alamos from the Santa Fe Regional Airport, take Aviation Drive to NM-599 N. Follow NM-599 N and US-285 N/US-84W to the Los Alamos Highway. Exit from US-285 N/US-84 W by taking the NM-502 and continue to the park's visitor center on 20th Street. 

The Manhattan Project Park has centers in the three cities with varying operating hours depending on the seasons. You can visit the park's headquarters at the Los Alamos Visitor Center daily in summer and on Thursday through Monday during winter. The station closes on Tuesdays, Wednesdays, Christmas, and New Year's Day. 


475 20th Street, Los Alamos, NM 87544

Fee: Entry fee $0

The Manhattan Project National Historical Park has historical sites and landmarks that show the history behind the secret development project that brought about the first nuclear weapon in the world. You can visit the different buildings that housed the reactors and learn the process that resulted in the well-known Hiroshima and Nagasaki bombings of 1945. A trip around the park in an RV is a great way of experiencing the Manhattan Project because you can create a flexible itinerary. You can enjoy hikes along the different trails and reach all the landmarks hassle-free.