Mount Olympus, in Greek mythology, is the abode of the chief god Zeus. Also, the foremost gods of the Greek pantheon have their palaces at the summit. It is here that the gods assemble to consume nectar and ambrosia ("immortal"), the substances which reinforces their immortality. According to the myth, the top of the Olympus, which is covered in snow and hidden in the clouds, reaches all the way into the aether. It is the highest mountain of Greece and lies on the border of Macedonia and Thessaly.