Hi
I was watching some documentary on TV and saw some cool construction: it looks like a rollercoaster but instead is designed for people to walk on. The documentary was translated from German and some German university was mentioned so I suppose the place is located there. I took some fast snaps but they are not so perfect. Still, maybe someone knows what it is and where? (pls disregard my yoga mat obscuring the view a little bit)
by mcaron07