This is my second time to participate with the Ruby Tuesday, and I hope it's only the second of many more to come. :-) I keep my eyes open for photo ops at all times now.
What you are looking at is known as the "gum wall" at Post Alley in Seattle. You are not going to believe the "ewwww" factor of this tradition that has become a living art installation sought out by photographers.
The Market Theater in Post Alley at Pike Place Public Market has given up cleaning the gum it's patrons began sticking to the alley's brick wall while they were waiting in line. It's a habit that has stuck. Originally coins were pressed into the colorful gum blobs. Some people still affix a penny, but those quickly disappear.
After two complete removals and cleanings, the theater realized the futility of trying to keep the gum off. It is now become a 'public art installation', and a participatory one that grows daily.
Please be sure to check out the others who have shared their ruby photos here -> Ruby Tuesday.