15 Gum Wall; Seattle, Washington
In the hipster oasis that is Seattle, art comes in many forms, including, um, gum? According to the News Tribune, this sticky situation offends many locals who believe that their city should be known for something other than a wall of gum. This bacteria-infested art installation is in an alleyway next to the famed Pike Place Market, meaning that locals looking to pick up some fresh-caught fish have to endure Instagrammers looking for their best angle against a wall holding the germs of at least a few thousand other people.