Manhattan Project National Historical Park Los Alamos NM The Los Alamos Main Gate building. Once a security checkpoint, it is now restrooms behind the facade. Sculptures of J. Robert Oppenheimer (left) and Major General Leslie Groves. The Historic Fuller Lodge originally served the Los Alamos Ranch School as dining hall, community center, living quarters for some staff, and infirmary. For the Manhattan Project, it remained a dining hall, and also as housing for visiting scientists, and a community center throughout the Manhattan Project. Ancestral Pueblo Site. In the 1200s, this site was home to a group of Tewa-speaking people who may have come from Mesa Verde or Chaco Canyon. They built structures with blocks of tuff (welded volcanic ash). This building was two stories high and contained bedrooms, cooking areas, storage rooms, and a semi-circular kiva used for ceremonies and meetings for the two or three families who lived here. Hans Bethe’s house. Rear of Hans Bethe’s house. Bethe’s Living Room. Bethe’s Kitchen. Oppenheimer’s house. Oppenheimer’s Living Room.