1. In Course 1, go to the first bridge. Now go under the bridge where the coins are. Now jump and hold down A. Look, you are holding on to the bottom of the bridge! Now, make your way to the lowest part of the bridge WHILE HOLDING ON. Once you are at the bottom, let go. You go right through the bridge!

2. After you have beaten the second Bowser, go to the door at the top of the stairs in the lobby. Go through it. Take about 4 or 5 steps, and make a left. Now, push against the wall and do a double jump. You will jump right through the wall and pull yourself up to the top of the stairs!