Two hundred buildings spread over this 786-acre campus. Old Main (1877), the university's first structure, is a turreted brick Victorian, but most buildings are pink sandstone with red-tile roofs-the legacy of Charles Klauder's 1917 plan inspired by ..

The stunning Mesa Laboratory (1966, I.M. Pei) is an advantageous blend of style and science. Pei's international reputation was secured by this building, dramatically set against the Flatirons and inspired by Anasazi cliff dwellings (and featured in ..

The National Institute of Standards and Technology and National Oceanic and Atmospheric Administration share a large campus. Displays study electromagnetic interference, communications satellites and weather. Guided tours (2hrs) include a cryogenics ..