There are a lot of strange buildings all around the world that are well-known like the Guggenheim Museum, but this one is less popular and actually not a tourist attraction, but it's so worth to see!
I was there with my art class last year and it's sooo cool there! Seriously, the building is exactly like on the picture. And it's so fantastic built that it always looks different depending on the point of view and you can always find new shapes.
If you're in Germany, France or Switzerland, you should see this. It's in Germany, Weil am Rhein, but close to the borders to France and Switzerland.