Trāyastriṃśa

The Trāyastriṃśa (Sanskrit; Pali Tāvatiṃsa) heaven is an important world of the devas in the Buddhist cosmology.

The word trāyastriṃśa is an adjective formed from the numeral trayastriṃśat, "33" and can be translated in English as "belonging to the thirty-three [devas]".

It is primarily the name of the second in the six heavens of the desire realm in Buddhist cosmology, and secondarily used of the devas who dwell there.

In particular, they frequently find themselves in quarrels with the asuras, a separate set of divine beings who were expelled from Trāyastriṃśa and who now dwell at the foot of Sumeru, plotting for ways to recover their lost kingdom.

In Theravada Buddhist legends, there were 33 humans in Sakka's original group (who made enough merit to become devas atop Mount Sineru).

Buddha and Nanda visit the Divya Apsaras in Trāyastriṃśa Heaven, Gandhara.
Descent of the Buddha from the Trayastrimsa Heaven at Sankissa . [ 1 ]
Gods and goddesses dwell on Trāyastriṃśa heaven in Thai mural