Seattle’s gum wall is second in the world’s top five most bacteria-prone attractions, and the Seattle Market Theatre has a quirky tradition, dirty but fun: a giant wall full of gum. In the 1990s, travelers began sticking their chewing gum to the wall while waiting in line, creating a colorful but somewhat nauseating landscape for a decade. Some bold tourists even pinched the shape of their chewing gum. The gum wall is located in the Parker Market in Seattle, West Bank, USA, 50 feet long and about 15 feet high. It is incredible that this wall is densely sticky with millions of chewed gum, shaped human face, puppy, heart shape, peace sign, etc. This wall is 15 meters long. From top to bottom, there are colorful gums and countless dried saliva.