The Roof is not easy to get to by accident. You have to take the Elevator to the Theater Room, then backstage you will find a portal that takes you to the hair dye closet in the Salon. Give a dragon there a sky lantern fueled with hydrogen and he will beam you up to the Roof.

Be sure to take a jacket because the Roof is subject to ferocious winds. The Roof stretches for as far as the eye can see, and is covered in lines, dashes, squares, and circles of paint to help guide the many airborn creatures and machines that call the Roof home.

On the roof you will find a variety of airships, jumbo jets, hot air balloons, ornithopters, jet-proppelled wings, dragons of all shapes and sizes, zero gravity vests, zeppelins, starships, UFOs, and other flying creatures.

The flight attendants that are constantly scurrying about can help you find, borrow, rent, buy, steal, or otherwise obtain a flying thing to suit your needs. The Roof will guide you in taking off and landing and will require ID if you are to use it.