Aerial photography
These galleries are all about the perspective afforded by height.

  300 Miles High
Kokogiak's gallery of select NASA imagery. These photos were taken by astronauts and by remote cameras from the space station and the shuttle.

  Yann Arthus Bertrand: Earth From Above
Yann does his photography primarily by helicopter, but he also makes use of high wing planes, ULM, and parachutes. This series of 1000+ images covers much of the globe.  
See also altitude-photo.com

  Kite Aerial Photography by Scott Haefner
The 'lowest' form of aerial photography. These photos are taken with camera rigs attached to kites. The kites can be as large as 30 square feet.

More aerial photography:
1906 San Francisco quake photographed by a 'captive airship'