Fuente de Neptuno, Santiago de Chile, Classical fountain at Cerro Santa Lucia Park, Santiago, Chile

The Neptune Fountain sits on a terrace at the Alameda entrance to Cerro Santa Lucía, centred on a circular basin. At its highest point a bronze Neptune, seated and holding a trident, crowns the group. Two parallel staircases flank the basin and rise to a triumphal arch with four central Ionic columns and ornament in the same architectural style.

The bronze Neptune was cast by the Val d'Osne foundry in France from Gabriel-Vital Dubray's 1856-57 model, popularised at the 1862 London International Exhibition. The ensemble was installed in 1859 on the central median of the Alameda de las Delicias, then Santiago's main promenade. It was later moved to its present spot at the hill's Alameda entrance; the design was begun by French architect Victor Henri Villeneuve and completed by Chilean Benjamín Marambio.

The fountain was manufactured in France and represents 19th-century industrial mass production techniques. Today it serves as a recognized artwork that draws visitors interested in Santiago's public art history.

The fountain stands at a pathway intersection at the base of the hill and serves as a practical landmark for visitors. The wide staircases are easy to access and offer a good starting point for exploring the park.

The fountain is one of several identical copies cast by the Val d'Osne Foundry in France from the same mold. This makes it an example of cross-Atlantic artistic collaboration in the 19th century.