Robert Pratta / Reuters A journalist, wearing slippers to protect the glass floor, stands in the 'Step into the Void' installation above Chamonix, in the French Alps, on Dec. 17, 2013.

Robert Pratta / Reuters The glass box is perched atop the Aiguille du Midi mountain.

Visitors to the French Alps are being invited to "step into the void" in order to take in a magnificent — and vertigo-inducing — panorama of the landscape around Mont Blanc.

The Chamonix Skywalk, which opens to the public on Saturday, is a glass box perched atop the Aiguille du Midi, a 3,842-meter (12,605-foot) peak, with a 1,000 meter drop directly below.

-- Reuters





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Robert Pratta / Reuters The view downwards.