Running around a track can become boring and mundane. Spanish architecture firm Subarquitectura wanted to spice things up a bit so they created the 3D Athletics Track. At one point, where it forks, runners are confronted with the choice of taking the ordinary flat path or the unconventional hilly one.
"We have added to the conventional track an alternative one, amateur and funny, raised and tree-dimensional," says Subarquitectura. "It goes off on a tangent, covers the changing rooms and returns to the conventional track."