Agrippa and Tiberius enlarged the theatre, and Trajan finished their work. Antoninus Pius paved the great east to west artery with granite. A circus, other colonnades and great numbers of baths were built, and new aqueducts to supply them bore the names of Caesars, the finest being the work of Hadrian. The Roman client, King Herod (most likely the great builder Herod the Great), erected a long "stoa" on the east, and Agrippa (c. 63–12 BC) encouraged the growth of a new suburb south of this.