The fountain that Regilla built had two levels of niches bearing statues and a columnar façade. Statues have survived from the monument. The central niche on each level held a statue of Zeus, surrounding by portrait statues on each side. The lower level contained the Roman Emperor Antoninus Pius and the ancestors and descendants of the emperor. These included the previous Roman emperor Hadrian; Hadrian's cousin-wife Vibia Sabina; the Roman empress Faustina the Elder; the daughter of the elder Faustina and Antoninus Pius, Faustina the Younger; and Antoninus Pius’ adopted son and son-in-law, the future Roman emperor Marcus Aurelius. This level also showed several children of Marcus Aurelius and Faustina the Younger, in particular their first daughter Annia Galeria Aurelia Faustina (aged about 7 but shown as a young adolescent). On the upper level, paralleling the imperial family, were statues of Regilla, Herodes Atticus, Regilla's parents, Regilla's maternal grandfather and Herodes Atticus’ parents. There were four statues of the children of Regilla and Herodes Atticus, named Elpinice, Athenais, Atticus Bradua and Regillus. The life-sized statue of the bull and the statues from the fountain are on display at the Archaeological Museum of Olympia.