» Underground ‘terrorists’ with a mission to save city’s neglected heritage
There’s an underground group in Paris called les UX dedicated to improving and utilizing hidden parts of the city, not unlike other urban explorers, but they go much further. Its “restoration unit” is called the Untergunther, and they have, among other things, made an underground cinema and restaurant, and they snuck in and out of the Pantheon in Paris for a year, where they set up a secret workshop and lounge and restored the antique clock there.
— dailymeh