The Rainier Club
This is Seattle's oldest private club, incorporated in 1888. The historic brick building, nestled amidst the skyscrapers downtown, has hosted figures ranging from Bill Clinton to Babe Ruth. With about 1,300 members, it's not ultra-exclusive, but the location and pedigree can't be beat. Membership dues include access to all on-site facilities, including the gym.
820 4th Ave, Downtown (206-296-6848)