In my younger years I visited Ripley’s Believe it or Not Museum. Near the end of the adventure was a tunnel. I recall this memory due to being tricked by what I was observing. The tunnel was moving in a circular position. The goal was to walk through the tunnel without walking sideways due to the optical illusion. I remember telling myself to stare at the bridge since that was the only object not in motion. This made it easier to cross the bridge to exit the museum. I’ve attached a video below of the optical illusion.