The iconic Space Needle, built in 1962 for the World’s Fair, sits against the picturesque backdrop of the Cascade Mountains to the east, and Puget Sound to the west. Museum of Pop Culture (MoPOP), the product of innovative architect Frank O. Gehry, bursts out of Seattle Center with vibrant colors and eccentric curves. The Rem Koolhaas-designed Seattle Central Library turns heads in downtown Seattle, and attracts visitors for its unique design. A handful of organizations offer specialized tours that explore the stunning selection of architectural masterpieces in both the downtown core and residential areas. Have tea with Historic Seattle in a historic private estate, or enjoy a variety of guided walking tours with the Seattle Architecture Foundation.