A skillfully constructed exedra conceals the retaining wall of the medieval structures of the Aracoeli and encloses the courtyard. The so-called Marforio fountain derives its name from the Martis Forum (Forum of Mars), i.e., the Forum of Augustus with the Temple of Mars Ultor, where it is thought that the statue originated. The figure of the river-god, originally part of the decoration of a fountain that might date to the Flavian age (first century AD) was restored with the typical attributes of Ocean. This statue was very famous because when it was still located at the foot of the Campidoglio the Romans posted on it defamatory remarks against the government signed with the name of Pasquino. A commemorative inscription placed above the fountain records the year of the creation of the Capitoline Museum (1734). Beside the inscription is the bust of the pope who promoted the museum.