- Get Involved
The National Air And Space Museum and the National Museum of American History will be open today, March 5; all other Smithsonian Washington, D.C.-area museums and the National Zoo will be closed due to inclement weather. The Smithsonian museums in New York will be open today.Skip navigation
March 24, 2004 – June 29, 2004
Museum: American History Museum
Location: 2nd Floor, East Wing
On display is a model of the Three Mile Island nuclear power plant in Pennsylvania, to mark the 25th anniversary of the accident that took place there in March 1979. The model was built to allow damage to the core to be assessed. Also on view are several artifacts related to the accident.