A surprising number of New York City offices, laboratories, and warehouses were involved in the top-secret Manhattan Project. While these New York City sites remain largely unmarked and unknown, they were a small but crucial part of the success of the project, and deserve to remembered. The term “Manhattan Project” is commonly thought to be a misnomer, but the first offices of the Manhattan Project were at 270 Broadway. Atomic Heritage Foundation: https://www.atomicheritage.org/location/manhattan-ny I just came back from a road trip where one of my stops was a bus tour of the Oak Ridge site - Manhattan Project National Historical Park. The Manhattan Project is a fascinating mix of science and history, very cool! https://www.nps.gov/mapr/oakridge.htm I was amazed how many wrong answers were given to this question on Quora. https://www.atomicheritage.org/location/manhattan-ny project. Oak Ridge, Tennessee[edit] The American Museum of Science and Energy provides bus tours of several buildings in the Clinton Engineer Works including the: X-10 Graphite Reactor Buildings 9731 and 9204-3 at the Y-12 complex East Tennessee Technology Park, located on the site of the K-25 Building On Oppenheimer's recommendation, the search was narrowed to the vicinity of Albuquerque, New Mexico, where Oppenheimer owned a ranch in the Sangre de Cristo Range.[43] The climate was mild, there were air and rail connections to Albuquerque, it was sufficiently distant from the West Coast of the United States for a Japanese attack not to be an issue, and the population density was low.[42] Oak Ridge, Tennessee[edit] The American Museum of Science and Energy provides bus tours of several buildings in the Clinton Engineer Works including the: X-10 Graphite Reactor Buildings 9731 and 9204-3 at the Y-12 complex East Tennessee Technology Park, located on the site of the K-25 Building References[edit] Jump up ^