The rebirth of Athens under Rome’s foremost philhellenic emperors, Augustus and Hadrian. High quality Greek marble and expert Greek stone carvers produced notable edifices in Roman Greece dependent on a mutual exchange of architectural ideas and motifs between Rome and Athens. These include the Monument of Philopappos, the Library and Arch of Hadrian, and architectural additions or transformations made to the Acropolis and the Greek and Roman Agoras.