Potala Palace...

"The Potala Palace is located in Lhasa. It was named after Mount Potala, the abode of Chenresig or Avalokitesvara. The Potala Palace was the chief residence of the Dalai Lama until the 14th Dalai Lama fled to Dharamsala, India, after an invasion and failed uprising in 1959. Today the Potala Palace has been converted into a museum by the Chinese.

The building measures 400 metres east-west and 350 metres north-south, with sloping stone walls averaging 3 m. thick, and 5 m. thick at the base, and with copper poured into the foundations to help proof it against earthquakes. Thirteen stories 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 m (about 1,000 ft) in total above the valley floor. Before the first skyscrapers were built, the Potala Palace was the world's tallest building.

The Potala Palace was inscribed to the UNESCO World Heritage List in 1994. In 2000 and 2001, Jokhang Temple and Norbulingka were added to the list as extensions to the sites.

The number of visitors to the palace was restricted to 1,600 a day, with opening hours reduced to six hours daily to avoid over-crowding from 1 May 2003. The palace was receiving an average of 1,500 a day prior to the introduction of the quota, sometimes peaking to over 5,000 in one day. Visits to the structure's roof was banned after restoration works were completed in 2006 to avoid further structural damage Visitorship quotas were raised to 2,300 daily to accommodate a 30% increase in visitorship since the opening of the Qingzang railway into Lhasa on 1 July 2006, but the quota is often reached by mid-morning. Opening hours were extended during the peak period in the months of July to September, where over 6,000 visitors would descend on the site."

Text in: http://en.wikipedia.org/wiki/Potala