Business Matters - What does 20 years of chewing gum look like? - ÃÛÑ¿´«Ã½ Sounds

Business Matters - What does 20 years of chewing gum look like? - ÃÛÑ¿´«Ã½ Sounds
What does 20 years of chewing gum look like?
There is a gum covered wall in the city of Seattle in Washington State but is it art?