Ancient Ostia River Cruise, Tour, and Tickets From/To Rome Once embarked, a cruise on the Tiber River of about 2 hours will begin. Navigating through the natural reserve that runs along this stretch of the river up to ancient Ostia, the Guide will entertain you by giving you information about this legendary river. You will arrive at the private dock and, divided into groups (max of 25 people), after a short break to get something to eat and to use the toilet, the 2 hours guided tour will begin. The Guide will tell you about many curiosities, and you will see countless monuments. Wandering through alleys, streets, and squares, you will enter the "Thermopolium," a Roman restaurant, the "Fullonica, "an old laundry. Continue along the main artery, and visit the Baths of Neptune with its beautiful mosaics, the ancient theater from where there is a 360-degree view of Ostia. In the end, you can admire countless mausoleums arranged on the ancient Via Ostiense. End of the tour back to Rome.