The Mona Lisa painting only became really famous after someone stole it in 1911. Before that, nobody bothered to guard it properly because it wasn't popular and

The Mona Lisa painting only became really famous after someone stole it in 1911. Before that, nobody bothered to guard it properly because it wasn't popular and they thought nobody would be interested in stealing it lol https://en.wikipedia.org/wiki/Mona_Lisa#Refuge,_theft,_and_vandalism https://en.wikipedia.org/wiki/Mona_Lisa#Refuge,_theft,_and_v...