After 20 years of people sticking their gum to the walls of an alley by Seattle's Pike Place Market, officials say it is time for a cleanup.
Pike Place Market announced this week that it will take down the estimated one million pieces of gum off the walls of Post Alley.
Known as the "gum wall", the sticky landmark has become a popular attraction to visitors and locals.
Besides gum, people leave pictures, business cards and other mementos.
Some pieces of gum were shaped into hearts and messages.
The market has hired a contractor that will use steam to melt off the gum.
Pressure washing, they said, damages the historic building too much.