Mercedes-Benz Museum in Stuttgart

You're standing at the Mercedes-Benz Museum in Stuttgart, the home town of the brand with the three-pointed star. Take a good look at the shape of the building. It's a bit like a cloverleaf. That's exactly the idea: the architects at UNStudio overlapped three circles and cut out the middle. That created a triangular atrium inside. The triangle is meant to recall a Wankel engine, an unusual rotary engine. A building that's a little bit of an engine itself. Fitting, for a car museum.