Guerrilla restorers fix Pantheon's clock
This story is worthy of a movie. A group known as the Untergunther regularly broke into the Paris Pantheon for a period of one year in order to restore the broken clock on the building. They went as far as building a lounge/workshop with electricity and internet access.
When they were done, they let officials know, who promptly pressed charges.
For a year from September 2005, under the nose of the Panthéon's unsuspecting security officials, a group of intrepid "illegal restorers" set up a secret workshop and lounge in a cavity under the building's famous dome. Under the supervision of group member Jean-Baptiste Viot, a professional clockmaker, they pieced apart and repaired the antique clock that had been left to rust in the building since the 1960s. Only when their clandestine revamp of the elaborate timepiece had been completed did they reveal themselves.