(Potala was the winter palace of the Dalailama, which was originally built in the 7th century by the king Sotsen Gampo and rebuilt to the present size by the 5th Dalailama in the 17th century. Built in 1416 by Tsongapa's disciple Jamyang-choje, Drepung Monastery is the biggest Gelupa monastery in the west suburb of Lhasa. Built in the mid-18th century by the 7th Dalailama, Norbulingka, the Jewel Park was the Dalailama's summer palace, it covers 100 acres with palaces, pavilions and a zoo.