Countless gum stuck to the wall over the last 17 years form a colorful mosaic on a singular wall known as Gum Wall (wall of gum) in Post Alley, Seattle. Considered one of the most extravagant attractions of the United States, the wall also holds the title of one of the most germ infected tourist spots worldwide.

Located in the Park Place Market, the wall began to fill chewing gum in the early 90s, when long lines of spectators looking for theater tickets were parked on his forehead. Angered by waiting, they began to stick their gum in protest. They then used the rubber to stick coins, but over time the tradition of the coins disappeared and the unusual habit of going to visit and leave on that wall itself remained. A sample gallery in all its magnitude.

At first, the theater staff was responsible peel gum after each function, but the practice had become customary and stopped doing so...