Lots of history!
We enjoyed our stay in Rome very much. Amazing sites. It was unfortunate that the Trevi Fountain was not working. There were many people selling things on the street like selfie poles, sling shot helicopters and flowers. They were very aggressive and very annoying. Definitely spoiled the atmosphere when trying to relax on the Spanish Steps or enjoy a dinner at an outdoor cafe.
Insider Tip:Get the Roma Pass. Skip lines and use the transit for free. Definitely worth it!