The Babylon Garden was home to the ancient Babylonians the ancestors of the Babylon Rogues.
The Babylon Garden was an ancient city buried in the sand by the gods to punish the Babylonians for their crimes. The city raised out of the desert when Jet used the key and the Chaos Emeralds to find the ancient treasure his ancestors that was buried with the city. Raising the garden had awakened Angelus the guardian of Babylon who battle the Babylon Rogues and Team Sonic who defeated him Angelus vanished and gave the heroes the treasure. Sonic and the Rogues found out the treasure a ancient Extreme Gear. Dr. Eggman showed up to steal the treasure but was disappointed that it wasn't what he was hoping for. Eventually the Babylon Rogues and Sonic's friends learned that the garden was ancient spaceship that experienced a malfunction and crushed into the planet this discovery was made after finding the Arks of the Cosmos.