Seattle, Tacoma International Airport

Tacoma International Airport in Seattle is probably the ugliest airport in the country, inside and out, but whatever you do, don't use the airport parking garage. It is incredibly expensive, and to boot very inconvenient in terms of actual access to either departures or baggage. It is amazing that someone actually planned this place. No wonder Boeing executives moved to Chicago! This airport is an embarrassment to an otherwise lovely (though quirky) city.