I found this odd shoe garden in Alamo Square in San Francisco. I snapped some pictures real quick just so I could remember to look it up when I got home. This park Alamo Square is across from the painted ladies (which appeared in the opening credits of "Full House").
I guess the story goes that the gardener for the park always picked up trash and a lot of time found shoes... so rather than throwing them out he started using them to plant with it. It was really a neat thought!