Super Mario 64/Tower of the Wing Cap

This stage is found by getting 14 stars. When you do, a bright light will be shining on the first floor of the castle. Stand in the sun emblem and look toward the source of the light to enter the stage.

You have to enter as Mario, since he is the only one who can use the wing cap. (All other characters fall through the stage immediately after entering.) The ? switch is located here, so step on it to make all red ? blocks useable.

There is a star in here also. Collect the eight red coins floating in the sky. They are all between the four towers. The star is on the center castle tower.