The Colosseum and the Forum are right next to each other in Rome, so I included them together. Remnants of a civilization that once controlled the known world, these sites are breathtaking not only for their beauty but also for their history and age. Are you standing in the spot Caesar walked and gazing into the arena where gladiators battled to the death. The Colosseum has slowly crumbled throughout the ages, and much of it is restricted now, especially the floor and basement where everything was organized. The Forum is great to walk around (and it’s free), though a ticket is required for Palatine Hill. I would definitely get a guided tour, because the information presented by the authorities doesn’t go into much depth.Because it's very danger.