Historically, the most significant monastery in Tibetan Buddhism, Drepung Monastery(འབྲས་སྤུངས་དགོན་པ།) used to be the seat of political and religious power in Tibet (before the Potala Palace was built). This significance came in part due to its location just outside of Lhasa, and in part due to it being the primary seat of the Gelugpa sect.