Hadrian traveled extensively in the empire, interesting himself in all the local affairs of state and adorning the provincial cities. In Germany he built great protective walls, and in Britain (where he had visited c.121) he had Hadrian's Wall constructed. He built a temple of Jupiter Capitolinus on the site of the ruined Temple at Jerusalem and renamed Jerusalem Colonia Aelia Capitolina. He also built the Arch of Hadrian in Athens, and in Rome he rebuilt the Pantheon, added to the Roman Forum, and erected a mausoleum (now Castel Sant'Angelo). His last years were spent more or less quietly in Rome and in his villa at Tibur (which has been excavated), cultivating the arts. He was learned in Greek and accomplished in poetry and music. Hadrian also patronized artists, and his love for the doomed young Antinoüs was memorialized by sculptors and architects. As his successor he chose Antoninus Pius .
See S. Perowine, Hadrian (1987); M. T. Boatwright, Hadrian and the City of Rome (1989); A Everitt, Hadrian and the Triumph of Rome (2009).
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