I have driven the traffic circle around The Arc de Triomphe in Paris and it was one of my more terrified moments. You can get in but you can't get out.
https://parisjourney.com/driving-the-dangerous-arc-de-triomphe-roundabout-in-paris
Watch the video

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Tony H
W111 280SE 3.5 Coupe
Manual transmission

Past cars:
Porsche 914 2.0
'64 Jaguar XKE Roadster
'57 Oval Window VW
'71 Toyota Hilux Pickup Truck-Dad bought new
'73 Toyota Celica GT