Port Angeles, Washington photo by Elger Esser, 2009
Dymaxion House, Wichita, Kansas designed by R. Buckminster Fuller,
Kenosha, Wisconsin photo by Brian Ulrich, 2003 via: PDN
Lockheed Marietta B-47E Stratojet via: aeroman3
Postsparkasse Rundstiege photo by Luzia Ellert via: whoch2wei
untitled shot by jaycinista, 2011