The Potala Palace is a dzong fortress in Lhasa, Tibet. It was the winter palace of the Dalai Lamas from 1649 to 1959, has been a museum since then, and has been a World Heritage Site since 1994.
The building measures 400 metres (1,300 ft) east-west and 350 metres (1,150 ft) north-south, with sloping stone walls averaging 3 metres (9.8 ft) thick, and 5 metres (16 ft) thick at the base, and with copper poured into the foundations to help proof it against earthquakes. Thirteen storeys of buildings, containing over 1,000 rooms, 10,000 shrines and about 200,000 statues, soar 117 metres (384 ft) on top of Marpo Ri, the "Red Hill", rising more than 300 metres (980 ft) in total above the valley floor.