Police security guards for the Olympic Torch relay march in front of Potala Palace in Lhasa, June 21, 2008.
Guang Niu/Getty Images
Chinese policemen march past the Potala Palace after the ending ceremony for the 2008 Beijing Olympic Games torch relay on June 21, 2008 in Lhasa, Tibet.
Potala Palace is the most famous site in Lhasa. The former residence of the Dalai Lama, the palace is actually a complex of palaces, chapels and galleries built at different times. Construction of the palace was begun in 1645 by the 5th Dalai Lama. The current Dalai Lama, the 14th, lived in Potala Palace until 1959, when he escaped Tibet. It is now a tourist attraction.