California has a 21 metre long bubblegum alley
The 'Bubblegum Alley' in San Luis Obispo, California is a 21 metre-long landmark which is lined with chewed-up pieces of bubblegum. Some of the pieces of gums date back over 40 years and are stuck in different shapes including local fraternity symbols and different letters. There have been several unsuccessful attempts to have the alley cleaned over the years.