The circus was first built in 56 CE and restored in the 2nd century CE (Humphrey, 1986: p.27). The barrier in the middle, called a spina, is one of the most complete originals that survived antiquity; the wall was 1.6 meters tall and includes two turning posts (metae) at 231 m tall, decorations, and water features (Humphrey 1986: p.38). Also to survive were a number of herm bases and shafts in situ, as well as altars and statue groups (Humphrey 1986: p.47). It was linked to the amphitheatre by a gallery (Dunbabin, 2016: p.92).
