9Waldspirale, Darmstadt, Germany
There is something different when it comes to roof gardens in which only a few stand out from the rest. Waldspirale or otherwise known as forest circle is different from conventional architecture. It is designed with a ramp shaped like a letter U, which has grasses and shrubs on top, spiraling 12 floors towards a café that guests can enjoy. Click the next ARROW to see the next image!