Sid's Tower

Sid's Tower is the reward for reaching 100 coins.
Sid's tower is a ginormous towering island near spawn, the bridge to it will open when you reach 100 coins. At the top, Sid will be waiting for you, and will reward you with a back-handed compliment and Sid's Mask and Sid's Wings. Other than the top, the tower is mostly barren, with only a few checkpoints and one InfoTab.