Founded around the 4th century BC, Ostia served as Rome's port city for several centuries until the Tiber changed course, leaving the town high and dry. What has been excavated here is a remarkably intact Roman town. To get the most out of a visit, fair weather and good walking shoes are essential. To avoid the worst extremes of hot days, be here when the gates open or go late in the afternoon. A visit to the excavations takes two to three hours, including 20 minutes for the museum. Inside the site, there's a snack bar and a bookshop.
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