Commodus, Rome's infamous "mad emperor," ruled with vanity, cruelty, and gladiatorial obsession, shaping the empire's decline ...

Tourists can now walk in the footsteps of emperors. This month, a secret passage within Rome's Colosseum, reserved for royalty in ancient times, opened to tourists.

A once-hidden tunnel running into the Colosseum in Rome, Italy, given the name of an emperor after its discovery will be open ...