Super Mario Sunshine Walkthrough
Ricco Harbor Episode 4:
The Secret of Ricco Tower

You get into the tower by jetting over from town.

This is an obstacle course. There are many rolling logs, turning gears, side angle logs. It's really a matter of practice, to get the timing right. The Last part is the worst. Just take it in straight lines, and you should make it through.

Super Mario Sunshine Walkthrough