Naval Undersea Museum, Washington

Operated by the Navy, the museum contains one of the largest collections of undersea technology exhibits in the country, including a manned Japanese kamikaze torpedo, the USS Greenling Control Room (a simulation of the control room of the nuclear submarine USS Greenling), and the Trieste II, a submersible that went to the bottom of the Mariana Trench. Located on the edge of the Navy's Undersea Warfare Center and torpedo station.