in Pompeii, such as the Central Baths and therefore represents the next aspect of development. Four large black-and-white figural mosaics were found here. The eponymous mosaic of Neptune riding a chariot drawn by hippocampi and surrounded by marine animals can be found after entering the bathhouse, this room is just south of the frigidarium. In an adjacent room is the mosaic of Amphitrite riding a hippocampus. The frigidarium has a mosaic of Scylla surrounded by sea divinities. The last figural mosaic is one of a group of athletes in a room to the south-east of the palaestra. There are two boxers with spiked gloves, two boxers-wrestlers, and a wrestler. None of the mosaics can be seen from any one position in the bathhouse, forcing a viewer to move through the space. The individuals in the mosaics have a three-dimensional quality to them, showing overlapping and twisting, although the scene as a whole remains flat. The Baths of Neptune are one of the few in Ostia that contains an open-air palaestra, surrounded on three sides by marble columns. Under the palaestra was a reservoir that received water from the Julio-Claudian aqueduct and feed the bathhouses in the area. The bathhouse was constructed with a monumental facade along the Decumanus, built at the same time as the bathhouse and repaired in 350 C.E., possibly after an earthquake in 346 C.E. There is a central exedra paved with marble that had a life-sized statue of Sabina, wife of Hadrian, dressed as the goddess Ceres. The statue alludes to the role the imperial family had with this bathhouse and has been identified as a shrine for the Imperial Cult. The upper floors of the building had domestic dwellings with separate entrances. Bath under the Via dei Vigili (Baths of the Provinces) A small bathhouse (II, V) has been partially uncovered in the Via dei Vigili, near the barracks of the firefighters. Some archaeologists also call it the Baths of the Provinces. The construction dates to circa 50 C.E. soon after Ostia received its aqueduct. The black-and-white mosaic is the most impressive part of the structure. At its center is a group of dolphins flanked by heads that represent different Roman provinces, encircling these are images of shields and spears implicating Rome's conquering of the provinces. These remains are the earliest archaeologists have recovered of a bath complex in Osita despite epigraphic evidence suggesting some