Identify.

Palace of Domitian, dedicated in 82 CE, Palatine Hill, imperial palace, Domus Augustana - private wing, Domus Flavia -public wing, architect - Rabirius, concrete allowing for dynamic and flexible forms, public sector (basilica with Domitian as judge, audience hall [Aula Regia], lararium), lots of colored marble, concrete faced in marble, opus sectile floor in triclinium, octagonal fountain, elliptical fountain (faced with colorful marble), sunken garden, hyppodrome (walking space, outdoor gymnasium)