Manhattan Project National Historical Park
Tennessee, New Mexico, Washington
🟢 🟡 🔴 hikes
Free entry
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.
Topics
No entrance fee.
Hours
Access to the Hanford B Reactor is by tour only. Separate tours of the Historic Sites are also offered. For more information about tours of the B Reactor, visit http://manhattanprojectbreactor.hanford.gov/. For more information about tours of the historic sites, visit http://tours.hanford.gov/HistoricTours/.
Conditions
Weather now: ☀️ Clear, 73°F
☀️ 87°/57°
☁️ 89°/62°
🌧️ 87°/63°
Things to do
Hanford: Attend a B Reactor Tour
Los Alamos: Tour Behind the Fence
Oak Ridge: Join a Ranger Program
Oak Ridge: Experience a Guided Tour Behind the Fence
Hanford: Visit the Museum at Keewaydin
Hanford: Visit LIGO
Oak Ridge: Visit the Oak Ridge History Museum
Hanford: Visit Nez Perce National Historical Park
Visitor centers
Hanford Visitor Center
Los Alamos Visitor Center
Oak Ridge Visitor Center
Tri-Cities Visitor Center
Not an official safety source — always defer to NPS.gov and rangers for life-safety decisions.
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