Sky Empire Pyramid Cities

The Sky Empire used the Forge of the Sea to craft cities in pocket dimensions. Each City was equipped with four gates that each led to a pyramid within the Material Plane on one of the Sky Empire Floating Islands.

There were two prime cities;
Wind Swept Sky; in Ancient Aarakokran (Must know Ancient Aarakokran and roll DC24 History)
Moon lit Depths; in Ancient Aarakokran (Must know Ancient Aarakokran and roll DC24 History)