Gum Wall

The Gum Wall is a brick wall situated beneath Pike Place Market in Downtown Seattle, Washington, United States. Located on Post Alley near Pike Street, south of the market's main entrance off 1st Avenue, the wall is covered with used chewing gum. Certain sections of the gum accumulation on the walls measure several inches in thickness, reaching a height of 15 feet along a 50-foot-long segment. Originating inadvertently in the 1990s, the Market Theater Gum Wall has evolved into a notable tourist attraction and local landmark.