I know the realms of Varuna, and Visnu's Trivikrama* worlds, the wars of the gods and Asuras, and the churning for ambrosia. *i.e. the worlds enveloped by his three steps during his Dwarf incarnation.
जानामि वारुणाँल्लोकान् विष्णोस्त्रैविक्रमानपि। देवासुरविमर्दाश्च ह्यमृतस्य विमन्थनम्॥