An apartment complex in Germany finds a place in the Projex Group Top 20 favourite green rooftops for its quirky design that supports plant and animal life.

Designed by Friedensreich Hundertwasser as a magical fairy-tale home, the Waldspirale (Forest Spiral) is located in Darmstadt and features a spiral-shaped structure with a multitude of gardens, nooks and hideaways for plant and animal life.

The unusual design of the building includes quirky features such as over 1000 windows with no two windows the same. Even the doors and handles are different. The walls of the U-shaped building secure an inner courtyard and playground, with a small artificial lake for the residents’ enjoyment. Trees peek out from the windows across all twelve floors of this beautiful green maze.

Image: The Waldspirale via Norbert Nagel