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Waldspirale, wald spirale, forest spiral, green roof, forest topped building, eco architecture, crazy architecture, green architecture, sustainable architecture, Friedensreich Hundertwasser, green building, roof garden, Heinz M. Springmann, bauverein darmstadt company, tree tenants, weird architecture
Image © Heidas

The Waldspirale contains 105 apartments, a parking garage, and a kiosk. There is also a café and bar located at the top of the forest spiral (imagine how nice that must be!). The building is shaped like a U, in the center of which there is an inner courtyard, playground, and small artificial lake for young residents to play in.

The Waldspirale’s breathtaking diagonalgreen roof is planted with grass, shrubs, flowers and trees that wind their way up the path of the 12 story building. But those aren’t the only plants that make their home at the Waldspirale. As is typical of a Hundertwasser building, “tree tenants” also protrude from windowsand along the facade of the building (though, unfortunately, they don’t pay rent).

And the fun doesn’t stop there. If you take a closer look, the building has some other weird characteristics that you won’t see elsewhere – at least not all in one place. For starters, the Waldspirale has over 1,000 windows and no two are the same. The handles that are attached to the windows and doors follow the same mismatched aesthetic. Oh, and did we mention the gilded onion domes? Yes, the Waldspirale has got those too.


Green roofs such as this one provide a number of environmental benefits: they reduce the urban heat island effect, insulate interior spaces, and help to reduce stormwater runoff.

+ Friedensreich Hundertwasser