It’s an invitation that’s not for the fainthearted: ‘Step into the Void’ is the name of a transparent glass cube that simulates the sensation of stepping off the mountain cliff in the French Alps.

Located atop the Aiguille du Midi, altitude 3842 meters, in the Mont Blanc Massif range, daredevils step into the glass box “Pas dans le Vide” suspended more than 1,000 meters off the valley floor for an unparalleled panoramic view of their snowy surroundings.

Three years in the making, the structure is built from three layers of tempered glass and can withstand winds of more than 220 km/h and a maximum temperature of 60°.

The attraction is accessible by the Aiguille du Midi cable car, a 20-minute journey from Chamonix.