In what seems to have been some sort of combination of performance art and environmental protest (maybe?), a group took a parking space in San Francisco, fed the parking meter, and transformed the space into a park of sorts. Tranforming a private space (parking space) into a public one (park… space).
Witness:
One of the more surprising parts of the project is that the group had absolutely no interference from authority-type figures.
The project website includes photos and text and such, as well as a handy how-to guide, should you feel compelled to re-create the experiment.