The retreat was liberated by the U.S. Army 101st Airborne and occupied by Easy Company, 509th PIR, as depicted in the HBO miniseries, "Band of Brothers."
As noted in a CNN.com story,
Most of the Obersalzberg buildings were destroyed by Allied bombers in 1945.
The U.S. military used the area as a resort after World War II, before handing it back to Germany in 1996.
Bavarian officials blew up Hitler's guest house in 1952 out of fears it would become a neo-Nazi shrine.