According to ancient Greek mythology, when things had to be decided in the mystical world, a council of 12 gods called the Olympians met on Mount Olympus to discuss things. The 12 Olympian gods all kept a home on Mount Olympus. Hades was rarely in residence. He preferred his home in the Underworld. Poseidon preferred his palace under the sea. But the rest of the Olympians could be found on Mount Olympus year around unless they were off traveling somewhere.