Today's Geo Quiz sent us looking for a monument in Paris with a clock that's correct only twice a day.

It's the Panthéon and that clock was broken -- deliberately -- in the 1960s.

Panthéon

An attendant got tired of winding it up...so he hacked it up.

A group of heritage-minded lawbreakers started to sneak into the Panthéon every night in 2005.

Within a year, they'd restored the clock.

Spokesman Lazar Kunstmann says it would've been foolish for the group to tell the administrators what it doing.

Listen to the interview