Station Square is famous for its many attractions, including an amusement park (the Twinkle Park level) a hotel/restaurant, and a casino (the Casinopolis level). An elevator also leads to the Speed Highway level located above the city. A train station in the city allows the player to take a train to the Mystic Ruins, while a boat allows them to reach Eggman's crashed Egg Carrier. It has a human population of 23,856,427 and a near-resemblance to New York City.
Areas
* Coastal area, a large outside area with the entrances to the train station, hotel, the office building, the City Hall area and Twinkle Park. Later in the game, there is also a boat that takes you to the crashed Egg Carrier.
* Train station (SS Central Station), the building where the train to Mystic Ruins is stationed. It also has a path to the casino area.
* Hotel, a large hotel that contains a pool, a Chao Garden and a penthouse restaurant. The entrance to Emerald Coast and Sonic's Crystal Ring can be found there.
* Office building (Cyber-Net Inc.), a skyscraper with an extremely proud owner. It is the entrance to Speed Highway, and Tails' Jet Anklets can be found in its sewage system.
* Twinkle Park area, a small room with doors that lead to Twinkle Park (Action Stage) and Twinkle Kart (minigame). In Twinkle Circuit E-102, Tails and Knuckles are able to play after finding their Twinkle Circuit pass (Found in the same place as where Sonic finds his security card).
* Casino area, an area that only contains the entrance to Casinopolis and a small alley. Tails fights the Egg Walker there.
* City Hall area, a downtown area with a small park, a burger shop, a variety shop and City Hall itself. There is also a manhole that leads to the sewer.
* City Hall, a large government building which is the entrance to Knuckles' Speed Highway, and the area where Sonic fights Chaos 0.
* Sewer, a dirty underground tunnel that leads to Twinkle Park and the variety shop. Sonic finds his Light Speed Shoes there.