Les UX (Urban eXperiment) is a Paris based underground organization that specializes in infiltration and restoration of objects and spaces. They utilise the intricate system of tunnels beneath Paris to break into places and commit insane, crazy, badass crimes like restoring the Pantheon clock and medieval crypts. No joke. But they also know how to cut loose sometimes by throwing the occasional play or awesome film festival. For more info read the awesome article over at Wired. To get a taste of what the Paris underground looks and feels like, check out the vids below, but please note, they are not UX affiliated.
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The Secret World of What Lies Beneath