In the area around Lhasa are many monasteries, most notably
Sera and Drepung. Drepung was once the world's largest monastery, with a
population of up to 10.000 monks. The Kora around Drepung climbs up to around
3900m and provides awesome views over the Lhasa valley. Sera Monastery was,
along with Drepung, one of Lhasa's two great Gelugpa monasteries. Sera Monastery
is particularly worth a visit in the afternoon when debating is usually held in
the monastery's debating courtyard.