Heaven of Joy.
Pure land or buddha field where Maitreya, the future Buddha resides. The pure land where bodhisattvas reside who are one birth away from attaining buddhahood.
One of the six heavens of the gods of the desire realm.

A Gelukpa monastery, founded by Je Tsongkhapa in 1408. It was so called because it is believed that Atisha had been reborn in Tushita.