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Manhattan Project National Historical Park

Los Alamos, New Mexico · Los Alamos County

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 t…

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About Manhattan Project National Historical Park

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.

How to Get There

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.

Driving directions (Google Maps) →

Plan Your Visit to Manhattan Project National Historical Park

Heading to Manhattan Project National Historical Park? A few things to know before you go:

  • Reservations: popular sites fill up fast — check Recreation.gov 6 months in advance
  • Fees: day-use and camping fees vary; check current rates on the official park page
  • Trash & pack-out: follow Leave No Trace principles
  • Wildlife: store food in bear boxes where provided; never feed wildlife
  • Weather: the 5-day forecast above is updated every 6 hours; verify just before you go

Frequently Asked Questions

Do I need a reservation for Manhattan Project National Historical Park?

No central reservation system listed for Manhattan Project National Historical Park. Check the official page (https://www.recreation.gov/recarea/14518) for the latest entry policy and availability.

How do I get to Manhattan Project National Historical Park?

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.

How do I contact Manhattan Project National Historical Park?

You can reach the park at phone: Hanford: 509.376.1647 or email: mapr_information@nps.gov.