Seattle is the city located in the state of Washington, and is an important air and sea trade port. The center of Seattle is extremely attractive in terms of tourism, especially for those who are fascinated by modern urban architecture. Among the most important buildings of the city it is important to mention Columbia Center (the highest city's building), Space Needle (TV mast and viewing tower, which is the symbol of Seattle), Smith Tower (the oldest skyscraper in the city) and 1201 Third Avenue (skyscraper, until 2008 it was the residence of the WaMu bank).