This residential wonder in a German university town has over 1,000 windows. Not a single one of them is the same. Far from being a design blunder, this is a point of pride for the architects of this truly whimsical building. And the windows aren’t the only things that are out of order. Oddities abound in this spiral-shaped building – from onion domes to a lack of straight lines to a multicoloured facade. It’s crowning peculiarity, however, is its roof garden. Or rather, roof forest. The “wooden spiral”, as it’s translated, has an entire woodland atop its undulating roof.
