Not far from the warehouses of Ostia are the Baths of Neptune, named for the mosaic in the main floor of Neptune driving his chariot across the sea, The mosaic has survived beautifully intact. These baths were public baths for everyone to use. The baths have several rooms. This particular mosaic is about 50 feet by 36 feet. Beneath Neptune are the sea nymphs and Tritons.
Just to the right of this mosaic (beyond the wall of the bath) is a furnace from medieval times which was used to burn marble and make it into lime. Much of the marble of Ostia met its demise in such a way because several furnaces from medieval times have been identified. Much of the marble and lime was used by the Popes to build the vatican basilica. Below left: another view of the Neptune mosaic.

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