<p>An aqueduct completed by Agrippa in 19 B.C. (Frontin., <i>Aq</i>. 10.1; Pliny, <i>NH</i> 36.121). Despite originating from a source E of the city (Frontin., <i>Aq</i>. 10.5), the Virgo approached the city from the N, descending into the *Campus Martius along the base of the *Collis Hortulorum (Quilici; Le Pera). Frontinus reports (<i>Aq</i>. 22.2) that the Virgo ran above ground on arches from the *Horti Lucullani to a point in the Campus Martius ‘beyond the front of the *Saepta’ (<i>secundum frontem Saeptorum</i>); a passage in Ovid indicates that the Virgo ended at the Temple of *Iuturna (<i>Fast</i>. 1.463-64), the location of which is much debated. Neither reference, then, provides a secure location for the terminal distribution tank, but recent excavations in the Iseum Campense have uncovered an underground portion of the Virgo’s canal running parallel to Via del Seminario (Alfano); this canal may belong to the Virgo’s secondary distribution network. The course within the city is otherwise well known, not only from Frontinus’ account but also from abundant physical remains, both above and below ground (Lanciani, <i>FUR</i> pls. 1, 2, 9, 15, 16; cf. <i>CAR</i> II, 11 no. 2; II, 211-12 no. 53a; II, 214 no. 66a; II, 218 no. 81; II, 221 no. 95; II, 229 no. 126; II, 231 no. 135).</p> <p>The Virgo, which served the *Thermae of Agrippa, the *Stagnum Agrippae, and the *Euripus (Evans 105), was instrumental to Agrippa’s building program in the Campus Martius. We also know that a secondary line of the Virgo supplied the *Trans Tiberim (Frontin., <i>Aq</i>. 84.2; cf. Iuturna, Aedes), and there is now general agreement that this secondary line crossed the river via the *Pons Agrippae (Lloyd).</p>