2,000 years ago, one of history's most notorious individuals was born, Caligula. Caligula has now become known as Rome's most capricious tyrant, and the stories told about him are some of the most extraordinary of any Roman emperor. He was said to have made his horse a consul, proclaimed himself a living God and indulged in scandalous orgies, and that's before you mention building vast bridges across land and sea, prostituting senators' wives, and killing half the Roman elite seemingly on a whim