The Louvre, home to the Mona Lisa, closed abruptly Monday as the museum's staff staged an impromptu strike over large crowds of tourists and understaffing.

The Louvre in Paris was unexpectedly closed Monday after its staff spontaneously went on strike, per the Associated Press. Thousands of visitors — many of whom had already purchased tickets — were left standing confused in a motionless line outside of the world’s largest and most visited museum,