Take a look at photos of these mafia members after their arrests.

Notorious gangsters, like Al Capone, Charles "Pretty Boy" Floyd and Bugsy Siegel, ruled the 20th century's organized crime world. From making money as bootleggers during the Prohibition era and carrying out violent bank robberies to arranging hits on rival gang members, these famous mobsters thought they were untouchable – until they weren't. 

Here's a look at the mugshots of some of history's most famous and elusive mobsters.