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.
Kaieteur Falls - the world's largest drop waterfall. Located on the Potaro River in central Guyana, Potaro-Siparuni region in Kaieteur National Park. My grandad was from Guyana, would love to visit one day.