Olympus was a mysterious planet inhabited by the Olympians.
Astronomical data
Olympus was at an unknown location. The planet's surface was lush, with trees scattered around. The only known settlement was a huge city, which appeared to be a huge temple. Here lived Zeus as well the other Olympians. (DWM: The Life Bringer)
History
The Fourth Doctor and K9 Mark II was brought to the planet by Prometheus after freeing him. Once there, they were brought to Zeus by Aphrodite. Prometheus was questioned about his actionsin stealing life spores and starting life in the universe. Prometheus escaped with the help of the Doctor and K9 and the three left in the TARDIS to unknown regions of the galaxy. (DWM: The Life Bringer)