Be stunned by the incredibly well-preserved ruins of Ancient Ostia dating back to the 4th century BC. Ostia was once one of the main Roman cities thanks to its position and the presence its harbor. Ostia was a port of republican Rome and a commercial centre under the empire. The Romans considered Ostia their first colony and attributed its founding (for the purpose of salt production) to their fourth king. At the height of Ostia’s prosperity in the early 2nd century ce, its population was approximately 50,000. The growing population was accommodated by means of tall brick apartment buildings of three, four, and five stories. During the Ancient Ostia Private Tour you will discover the floors paved with mosaic, and the walls elaborately painted and you will walk down the main street, the Decumanus Maximus, you will see ancient houses, taverns, baths, grocers and apartments. Marvel at still-intact mosaics and enjoy the view of the amphitheater.