Chamonix Skywalk, France: "Step Into the Void" installation at the Aiguille du Midi mountain peak above Chamonix, in the French Alps. The Chamonix Skywalk is a five-sided glass structure installed on the top terrace of the peak with a drop below.
La Tour Perce is a unique double arch and at 32 meters is the longest span in the Alps. The existence of this arch was only documented in Situated between Grenoble and Chambery (massif de la Chartreuse), Rhone Alps region, SE France.
Chartreuse Arch, Chartreuse Mountains, a mountain range in southeastern France, stretching to the north from the city of Grenoble to the Lac du Bourget. It is the southernmost range in the Jura Mountains and belongs to the French Prealps.