the Baths of Marciana, due to a bust of Trajan's sister being recovered there, and the thermae maritime based on epigraphic evidence. The baths were originally financed by Hadrian and Antonius Pius, they were completed in December of 138 or 139 C.E. and then renovated several times, during the 2nd century by Publius Lucilius Gamala, and in the 4th century by Proculus Gregorius, and even during the reign of Theodoric based on brick stamps recovered These renovations display the continued vitality of the extra-urban area of Ostia in the Late Antique/Early Medieval Period possibly due to the proximity of Portus. Recent scholarship suggests that the inscription found by Gavin Hamilton and currently housed in the Vatican Museums was not about the Baths of Neptune, but instead about the Porta Marina Baths. IMP(erator) CAESAR DIVI HADRIANI FIL(ius) DIVI TRAIANI PARTHICI NEP(os) DIVI [Nervae] PRONEPOS T(itus) AELIVS HADRIANVS ANTONINVS AVG(ustus) PIVS PONTIF(ex) MAX(imus) TRIB(unicia) POTES[tat(e) II co(n)s(ul) II?] THERMAS IN QVARVM EXSTRUCTIONEM DIVOS PATER SVVS ((sestertios)) XX ((centena milia)) POLLI[citus erat] ADIECTA PECVNIA QVANTA AMPLIVS DESIDERABATVR ITEM MARMORIBVS AD OMNEM C[ultum fecit?] (CIL XIV, 98). The Emperor Caesar, son of the deified Hadrian, grandson of Trajanus Parthicus, and great-grandson of the deified Nerva, Titus Aelius Hadrianus Antoninus Augustus, Pontifex Maximus, with the power of tribune for the second time, consul for the second time, delivered the baths for the construction of which his divine father had promised 2,000,000 sesterces, after adding more money than was wished for and also marble for the entire decoration. The baths appear to be a part of suburban revival initiated by Hadrian in the Porta Marina area in conjunction with the Baths of Silenus. They were sumptuously decorated, with many statue bases found in the frigidarium and several black-and-white mosaics with athletes in various stages of the competition and holding different prizes or pieces of equipment. A palaestra with a three-sided porticus is on the north end of the building. And the entrance halls and changing areas are decorated with mosaics showing fish and Nereids. The baths also contained sculptures of the labors of Hercules now housed in the Vatican Museum. Regio V Baths of the Philosopher The Baths of the Philosopher (V, II, 6-7) were built in the second half of the 3rd century C.E. into the existing fabric of a Trajanic building. Designed to take advantage of the passive heating of the sun, they are