Super Mario World/Cookie Mountain/Cheese Bridge Area
Appearance
One of the first levels with buzz saws. If you activate every one of the platforms it will make it much easier to recover if you take a fall.
The level is much easier if you have a cape and if you use the top platform.
Try flying underneath the real exit with a blue yoshi or a mario with cape you will find another exit which will lead to a secret underwater level called Soda Lake.
HINT: Use regular yoshi, drop below the normal exit and at the very last second jump off of him, he will fall but you will jump above a platform and find yourself behind the real exit.