This is probably the rarest attraction in the United States, the gum wall in Seattle, which also can be one of the most popular tourist sites infected with germs in the world.
Situated in Post Alley, at Park Place Market, the gum wall begins in the 1990s, when people, irritated because they had to wait in line to get tickets to the theater, leaving chewing gum on the wall. At first, the currency used to paste the wall, but over time, the tradition of coins disappeared, but the chewing gum remained.
