Manhattan Project National Historical Park
Designation: National Historical Park
Location: New Mexico, Washington, Tennessee
📘 Park Overview
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.
🌤 Weather Information
The Manhattan Project National Historical Park has units in Hanford, WA, Los Alamos, NM, and Oak Ridge, TN. Check local weather conditions at each unit before you visit.
🚗 Directions
Manhattan Project National Historical Park is located in three states: New Mexico, Tennessee, and Washington. For more information on accessing each of these three units, visit our Directions & Transportation page.
Images
J. Robert Oppenheimer and Gen. Leslie Groves at the Trinity Test Site.
Credit: Los Alamos National Laboratory
The B Reactor, located along the Columbia River in Washington, was the world’s first full scale nuclear reactor.
Credit: NPS
A hike with a Hanford park ranger can lead to new insights and perspectives of the local area.
Credit: NPS
Historic structures endure at Los Alamos, preserving the legacies and untold stories of this important chapter in world history.
Credit: NPS
Park rangers engage visitors in several locations across the Los Alamos area.
Credit: NPS
Many locations at the Oak Ridge site can be accessed through guided tours coordinated by the US Department of Energy.
Credit: NPS
An outing with Oak Ridge park rangers is fun for the whole family.
Credit: NPS
J. Robert Oppenheimer and Gen. Leslie Groves at the Trinity Test Site.
Credit: Los Alamos National Laboratory
The B Reactor, located along the Columbia River in Washington, was the world’s first full scale nuclear reactor.
Credit: NPS
A hike with a Hanford park ranger can lead to new insights and perspectives of the local area.
Credit: NPS
Activities
Topics
Operating Hours
Entrance Fees
No entrance fees listed.
Entrance Passes
No entrance passes listed.
3-Day Weather Forecast
Saturday, Nov 8
Sunny
High: 64.8°F | Low: 35.4°F
Humidity: 41%
Wind: 7.6 mph
Rain Chance: 0%
UV Index: 0.9
Sunrise: 06:34 AM
Sunset: 05:02 PM
Moon: Waning Gibbous (91%)
Visibility: 6 mi
Dew Point: 35°F
Cloud Cover: 0%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Sunday, Nov 9
Sunny
High: 52.9°F | Low: 27.9°F
Humidity: 54%
Wind: 11.4 mph
Rain Chance: 0%
UV Index: 0.8
Sunrise: 06:35 AM
Sunset: 05:02 PM
Moon: Waning Gibbous (83%)
Visibility: 6 mi
Dew Point: 28.5°F
Cloud Cover: 0%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Monday, Nov 10
Sunny
High: 60.3°F | Low: 27.5°F
Humidity: 45%
Wind: 4.5 mph
Rain Chance: 0%
UV Index: 0.9
Sunrise: 06:36 AM
Sunset: 05:01 PM
Moon: Waning Gibbous (73%)
Visibility: 6 mi
Dew Point: 30.9°F
Cloud Cover: 0%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Park Alerts
Park Events
Building America's Secret City: Guided Ranger Walk in Jackson Square [Oak Ridge, TN]
Manhattan Project National Historical Park will present a free program in Jackson Square.
Jackson Square, or Town Center No. 1, formed the social and economic center of the wartime community of Oak Ridge. Stroll through the townsite to learn how Oak Ridgers created community in the atomic city.
During the walk, rangers and visitors will discuss what it took to shape Oak Ridge during World War II through routines and traditions brought from near and far.
Program ends at the Jackson Square Tennis Courts right on time for the Tennis Court Dance.
Location: Jackson Square, Oak Ridge, TN 243 Jackson Square, Oak Ridge, TN 37830 The program will begin at the fountain in the main parking lot.
Date: May 15, 2025 12:00am to May 15, 2025 12:00am
Paid Event
Tennis Court Dance [Oak Ridge, TN]
Put on your dancing shoes, another summer of Tennis Court Dances are kicking off on the Jackson Square Tennis Courts. Held monthly on the third Thursday, Manhattan Project National Historical Park recreates the open air tennis court dances held during the Manhattan Project to entertain the 75,000 war workers and their families contained within America’s Secret City.
The dances are an all-ages event, and all are encouraged to participate. Featuring swing music from the 1940s, you might get bit by the jitterbug out on the court. Water, bug repellent and safe footwear is encouraged.
The 2025 Summer Season of Tennis Court Dances will be held on May 15, June 19, July 17, August 21, September 18, and October 23, 2025. Note: October's Dance is the 4th Thursday to coincide with Nuclear Science Week.
Location: Jackson Square Tennis Courts 96 W Tennessee Ave, Oak Ridge, TN 37830
Date: May 15, 2025 12:00am to May 15, 2025 12:00am
Paid Event
Atomic Explorations: Virtual B Reactor Tour [Hanford]
Virtual B Reactor Tour
B Reactor Tours are on hiatus for now but that doesn't mean you can't experience and learn about the reactor and its role in ushering in the nuclear age. You will be expertly guided through the B Reactor using visuals from the park’s virtual tour and demonstration items that will help bring the history, science, and legacies of the world’s first full scale nuclear production reactor to life.
Location: Join us in the Visitor Center located at 2000 Logston Blvd. Richland, WA
Date: Jul 7, 2025 12:00am to Jul 7, 2025 12:00am
Paid Event
Atomic Explorations: From Creation to Detonation [Hanford]
From Creation to Detonation: The story of Plutonium and the Manhattan Project
The rush to build the world’s first atomic weapons during WWII required a massive effort that touched multiple continents, produced profound scientific achievements, and deployed the most powerful weapons known to humankind. Learn about the global effort required to produce the plutonium used in one of the atomic bombs dropped on Japan during the waning days of WWII.
Location: Join us in the Visitor Center located at 2000 Logston Blvd. Richland, WA
Date: Jul 8, 2025 12:00am to Jul 8, 2025 12:00am
Paid Event
Atomic Explorations: Hanford Reach of the Columbia River [Hanford]
Hanford Reach of the Columbia River: Before, During and After Reactor Operations.
What was the Hanford Reach like before the arrival of the Manhattan Project in 1943? What was the impact of reactor operations on the river? What is the Hanford Reach like today? Join us to learn more about this fascinating part of the Columbia River through one person's exploration of the vast data and information available.
Location: Join us in the Visitor Center located at 2000 Logston Blvd. Richland, WA
Date: Jul 9, 2025 12:00am to Jul 9, 2025 12:00am
Paid Event
Atomic Explorations: Atomic Photographic Journey
Atomic Photographic Journey
Take a photographic journey starting in the mid-Columbia a century before the arrival of the Manhattan Project and ending over Nagasaki, Japan on August 9, 1945.
Location: Join us in the Visitor Center located at 2000 Logston Blvd. Richland, WA
Date: Jul 10, 2025 12:00am to Jul 10, 2025 12:00am
Paid Event
Atomic Explorations: Atomic Photographic Journey [Hanford]
Atomic Photographic Journey
Take a photographic journey starting in the mid-Columbia a century before the arrival of the Manhattan Project and ending over Nagasaki, Japan on August 9, 1945.
Location: Join us in the Visitor Center located at 2000 Logston Blvd. Richland, WA
Date: Jul 10, 2025 12:00am to Jul 10, 2025 12:00am
Paid Event
Atomic Explorations: Atomic Photographic Journey
Atomic Photographic Journey
Take a photographic journey starting in the mid-Columbia a century before the arrival of the Manhattan Project and ending over Nagasaki, Japan on August 9, 1945.
Location: Join us in the Visitor Center located at 2000 Logston Blvd. Richland, WA
Date: Jul 10, 2025 12:00am to Jul 10, 2025 12:00am
Paid Event
Atomic Explorations: Alphabet People [Hanford]
Alphabet People
Imagine living in a planned community where you can rent but not own a home. There is no unemployment, little to no crime, and Uncle Sam is your boss and your landlord. Welcome to WWII Richland, Washington—a secret city built to house Manhattan Project workers. Learn the ABC’s of those who lived in assigned housing in a secret city where "silence is security" and "blabatours are sabatours.”
Location: Join us in the Visitor Center located at 2000 Logston Blvd. Richland, WA
Date: Jul 11, 2025 12:00am to Jul 11, 2025 12:00am
Paid Event
Atomic Explorations: Alphabet People [Hanford]
Alphabet People
Imagine living in a planned community where you can rent but not own a home. There is no unemployment, little to no crime, and Uncle Sam is your boss and your landlord. Welcome to WWII Richland, Washington—a secret city built to house Manhattan Project workers. Learn the ABC’s of those who lived in assigned housing in a secret city where "silence is security" and "blabatours are sabatours.”
Location: Join us in the Visitor Center located at 2000 Logston Blvd. Richland, WA
Date: Jul 11, 2025 12:00am to Jul 11, 2025 12:00am
Paid Event
Visitor Center & Contacts
📍 Physical Address:
National Park Service, Manhattan Project National Historical Park
c/o NPS Intermountain Regional Office
Denver, CO 80225-0287
🏤 Mailing Address:
National Park Service, Manhattan Project National Historical Park
c/o NPS Intermountain Regional Office
Denver, CO 80225-0287
📞 Voice Phone: Hanford: 509.376.1647
✉️ Email: mapr_information@nps.gov