Swedish artists Akay and Peter enjoy using urban spaces for art, and what some may perceive as random acts are usually planned (and documented) attempts at turning ugly, empty places into fun, interactive and interesting destinations. For example, take this project: 65 swings made from rope, crate and cardboard that were strung up across Stockholm to bring a little fun back to the sidewalk.
All of these art projects are documented in their book Urban Recreation
(2006), and include other works like their dirt tables, toast coasters and water parks.
Wooster Collective via Inhabitat