When visiting Rome, Italy, travelers should follow the example of emperors and popes and see some of the surrounding country side. Fuori parta (beyond the gate), as Ancient Romans noted, lie great treasures. The area surrounding Rome, the region of Lazio, is one of the most beautiful areas of Italy in its own right, and those who travel beyond Rome's city gates will surely be in for a special treat.You can read more about best day trips from Rome via various websites.
To the east of Rome (about a half hour by train) lies Ostia Antica, a site that is considered to be "the Pompeii of Rome." Once the ancient site of Rome's port, this area lost its importance when the course of the Tiber River changed, leaving it (some 2,000 years later) a sandy, muddy wasteland.
Founded in the 4th century BC, today it is little more than a site for excavated ruins. Travelers exploring Ostia Antica, however, can gain a better understanding of what life was like in ancient times by exploring the excavations and accompanying museum.
Another spot worth journeying to on a day trip from Rome is Tivoli. In ancient times, Tivoli was the place where emperors went to escape the heat and misery of Roman life in the summer. Large palaces and villas were created, but by the middle Ages, this area had largely been abandoned. It was rediscovered by the elite of the Catholic church, those cardinals and popes with abundant wealth, who revived the area by building anew.