Did you see this? This is probably the coolest roundabout I came across so far. You can visit it in Switzerland, close to Bern.
Here is a dope Drone Video and an article about it in German.
Are you interested in the German language? Perhaps you know that I used to be a teacher for German as a foreign language. It is a cool (but sometimes difficult) language. I really love the concepts that you can easily create by combining different nouns. Even if you created a new word, everybody will know exactly what you mean by it! So awesome!