When in Rome, make sure to stop by this marvel!
Incredibly impressive, no trip to Rome would be complete without a visit to this amazing structure.
There are lots of tours that take you around the inside, and down into the depths of the ruin. Wonderful spot for photography, and great for adults and families alike.
If you have time, I would also recommend visiting the Roman Forum, which is just a short ways away.
Fun fact: Did you know that they used to have SEA BATTLES here?