Why was Mount Olympus sacred to the ancient Greeks?

Mount Olympus, Modern Greek Ólympos, mountain peak, the highest (9,570 feet) in Greece. In Greek mythology, Mount Olympus was regarded as the abode of the gods and the site of the throne of Zeus. Ancient greeks believed most gods inhabited it, but they regarded the mountain more as a figurative space for these gods and goddesses than an actual location. The name Olympus was used for several other mountains as well as hills, villages, and mythical personages in Greece and Asia Minor.

Source: Encyclopedia Britannica