The Milliarium Aureum (; ), also known by the translation Golden Milestone, was a monument, probably of marble or gilded bronze, erected by the Emperor Augustus near the Temple of Saturn in the central Forum of Ancient Rome. All roads were considered to begin at this monument and all distances in the Roman Empire were measured relative to it. On it perhaps were listed all the major cities in the empire and distances to them, though the monument's precise location and inscription remain matters of debate among historians. According to Philip Schaff, the phrase "all roads lead to Rome" is a reference to the Milliarium Aureum—the specific point to which all roads were said to lead. A marble structure speculated to be the base of the milestone is present in the Roman Forum. History Augustus, as curator viarum, erected the monument in 20 BCE. It probably received the name Milliarium Aureum soon after its inauguration. It symbolized the starting point of the Roman road system to the rest of Italy and to all the imperial possessions. Architecture and style The plan of the monument is among those missing from the recovered fragments of the Forma Urbis. The remaining fragments for this area of the Roman Forum are all in the so-called slab V-11, Stanford University#19 (Temple of Saturn with the frontal section and staircase, but the Rostra section is missing, Temple of Concordia, and Temple of the Deified Vespasian). Information from ancient authors is also very scarce, so there are many problems of interpretation concerning the exact nature of the Milliarium Aureum. Location It is certain that it was "hard by [under] the Temple of Saturn at the head of the Roman Forum", but its exact location is still unknown. Due to archaeological data from excavations by Kähler in 1959, which seem to confirm data from excavations by Bunsen in 1833, many scholars now believe that it was located at the southeast corner of the podium of the Rostra Augusti on a symmetrical axis with the Umbilicus urbis Romae. Style, structure, and dimensions The Milliarium Aureum seems to have been a marble column sheathed in gilded bronze; according to C. Hülsen, a huge marble cylinder was found in 1835 near the Temple of Saturn and it still had bronze hooks. The whole monument likely had the standard form of a Roman milestone. Some scholars think that the Milliarium Aureum was