Modern Monuments: Dulles International Airport

You may not think of an airport as monument worthy, but in the case of Dulles International Airport outside Washington, DC, it's a perfect example of mid-century modern architecture. Designed by Eero Saarinen (perhaps best known for his famous tulip table) in the late 50s, Dulles offers the traveler a lesson in architectural history and a glimpse into how a well-conceived design can often lead to frustration. (Am I alone in hating the terminal trams? I think not.)