The way you get to the top of Mt Pilatus in Lucerne, Switzerland. The world's steepest cogwheel railway at a gradient. We travelled on this, it was worth the magnificent view of Lake Lucern on the way back down.
Gorges de l'Areuse, Switzerland The Val de Travers is a Jura mountain valley perpendicular to the main valleys (hence the name). The river Areuse has cut itself steeply through the soft limestone and clay sediments. It's one of those Roman bridges too.