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Commissioned by Hyundai, the architect Asif Khan have built the blackest building in the world to celebrate the Olympic Winter Games that took place in Pyeong Chang, in South Korea. The Vantablack, the darkest matter in the world, strikes again! Thanks to its millions of extra-fine and vertically ultra-squeezed nanotubes,, it traps almost all the particles of light that venture into this "forest", and transforms them into heat. The method of producing these nanotubes is a bit complicated, because it requires "growing" them in the laboratory: so difficult to paint an entire building with it! That's why the company that produces Vantablack has created VBx2, a commercial version in aerosol that does not require the use of these nanotubes. "Less" powerful, it absorbs "only" 99% of visible light while the original Vantablack absorbs 99.96%. It is nevertheless impressive to see this structure create a hole of perspective in the landscape, punctuated by thousands of white lights that simulate the appearance of a constellation. The interior is in total contrast with the exterior, but linked with the great hydrophobic properties of the Vantablack: Khan designed a vast "water room" - a multi-sensory hydrophobic installation that emits 25,000 droplets of water every minute, punctuated by the visitor's interaction with a series of haptic sensors that order movements to these droplet flows : They gather, grow and accumulate in a "lake" that drains and reappears within minutes.