During an air attack by the U.S. Air Force on 17 April 1945 the Brocken Hotel and the weather station were destroyed by bombing . The television tower , however , survived . From 1945 until April 1947 , the Brocken was occupied by US troops . As part of the exchange of territorial ( specified at the Yalta Conference ) the mountain was transferred to the Soviet occupation zone . Before the Americans left the Brocken in 1947 , however , they disabled the rebuilt weather station and the television tower
Yalta Conference
Yalta Conference
Brocken