Unique perforations in the metal facade makes walls of climbing gym see-through when the sun sets.

In the small town of Brixen in Northern Italy, there is a climbing gym that is like no other. The exterior looks like a piece of crumpled tin foil, and what’s more, when night falls the crumpled building becomes transparent, with the climbers inside on view for all to see.

The Vertikale Kletterhalle, or vertical climbing gym, was designed by architects Martin Mutschlechner and Barbara Lanz of Stadtlabor, in collaboration with local architect Wolfgang Meraner.

The walls of the building are made out of aluminum that is laced with miniscule perforations. During the day, the building has a ripple effect inspired by a curtain, and by night, the perforations allows the light from within to make the building appear transparent. Says Mutschlechner:

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