A Deva in Buddhism is a type of celestial being or god who shares the god-like characteristics of being more powerful, longer-lived, and, in general, much happier than humans, although the same level of veneration is not paid to them as to Buddhas.
Deva and three devis in reverence. UPenn Ms. Coll. 990, Item 4 Page A40
Buddhist cosmology is the description of the shape and evolution of the Universe according to Buddhist scriptures and commentaries.
Buddhist mandala with Mount Meru shown in the center depicting the terrestrial universe divided into four quadrants each containing oceans and continents with the known world of humans, Jambudvīpa, located in the south alongside three other continents named Pūrvavideha, Aparagodānīya and Uttarakuru.
Wat Arun's pagodas were built and located to simulate the Buddhist Cosmology
Aerial view of Borobudur
Buddhist cosmological image of alternate world systems.