City of Timgad, by unknown, at Algeria, 100.

Ganter Bridge, by Christian Menn, at Near Simplon Pass, Switzerland, 1980.

Machu Picchu, by unknown, at near Cuzco, Peru, through 1500.

National Center for Atmospheric Research, by I. M. Pei, at Boulder, Colorado, 1961 to 1967.

Notre Dame du Haut, or Ronchamp, by Le Corbusier, at Ronchamp, France, 1955.

Potala Palace, by unknown, at Lhasa, Tibet, 1642 to 1650.

Silver Lake Lodge, by Joseph Esherick, at Deer Valley, Utah, 1982.

Solar Telescope, by Myron Goldsmith/ SOM, at Kitt Peak, Arizona, 1962.

Timberline Lodge, by W. I. Turner, Howard Griffin, Dean Wright, Linn A. Forrest, Ward Ganno, at Mount Hood, Oregon, 1936 to 1938.

Urner Boden, by traditional, at Urner Boden, Switzerland,  .