The Urdhvalokas (Sanskrit: ऊर्ध्वलोक, romanized: Ūrdhvaloka) or upper spheres of the world, are composed of seven lokas or worlds, according to Hindu mythology. The detailed explanation of them is found in the Vishnu Purana. The three highest lokas (realms), Jana, Tapa, and Satya are styled as durable, while Maharloka, has a mixed character; for although it is deserted at the end of the kalpa (aeon), it was not destroyed yet.[1]