An ancient Roman city built in 620 BC, Ostia Antica is now (like so many historic sights near Rome) a large ruin known for its time-worn frescoes and mosaics, as well as the intact buildings that were once imperative to a society who depended on them millennia ago. We suggest Ostia for the type of traveler looking to escape from the typical tourist charade of Rome; the ruins here are just as awe-inspiring without class field trips blocking your photo opportunity.
Once Italy's main seaport, the sea level has since receded and stranded Ostia Antica a few kilometers from shore. Archaeological findings date as far back as the 4th century BC and sights like the Baths of Neptune, the ancient forum with its obelisk and distinguished structures, and the Necropolis (cemetery) that greets you on your way in are both must-see. Located about a 30 minute ride outside of Rome, Ostia Antica is easily serviced by public transport (a direct shot from the Termini station) and makes for a good half day of an itinerary or more if you want to visit the nearby beach (Lido di Ostia).