Here are some very large Sonic statues. These appear every Sonic's birthday in Clyez City. Where's that? It's on an orbital space station in the SonicTeam game Phantasy Star Universe. Anyone on Central Table can take a look at these huge figures! They're fully 3D and likely about 50-75+ ft high each! The Sonic in the middle is largest, and stands atop an empty fountain.
Smaller versions of the statues also appear around the shopping areas as seen above. The Amy is also on Central Table but she's hidden behind Knuckles in the photo. Each statue sits among fake greenery and is on a lighted base. Some are in front of clothing stores, and others are infront of alcoves around the mall (Amy/Knuckles) If you'd like to see these in person, you need to be on PSU for the PC or the Xbox360.