Heaven of the Thirty-Three (Skt. Trāyastriṃśa; Tib. སུམ་ཅུ་རྩ་གསུམ་, Sumchu Tsasum, Wyl. sum cu rtsa gsum) — second heaven of the desire realm, situated on the summit of Mount Meru and presided over by thirty-three gods of whom Indra is the chief.
In the middle of it lies the city Sudarashana (Skt. Sudaraśana; Wyl. grong khyer lta na sdug, Eng. the city of “Lovely-to-See.”) The city has at its center (Wyl. rnam par rgyal ba'i khang bzang) the palace of Indra. The city is surrounded by four parks:
The gods of the Heaven of the Thirty-Three regularly wage war against the Demigods | asuras.