Pollio Fountain is located within ancient Ephesus, near the State Agora and opposite the Odeon, in the Selcuk district of Izmir Province. It is one of the notable public fountains of the ancient city, built at the end of the 1st century AD with funds provided by Gaius Sextilius Pollio and his family. The structure was part of the city's water supply system, which provided water to squares, baths, and other public spaces.

In Ephesus, water arrived via aqueducts from several sources and was distributed through pipes within the city. Such fountains served not only practical purposes but also emphasized the status of the city's streets and squares. Pollio Fountain shows how important engineering, urban improvement, and public architecture were for Roman Ephesus.

Originally, the fountain was designed as a monumental facade with a high niche, architectural decoration, and sculptural adornment. Today, tourists mainly see the surviving fragments of the structure, which make it possible to imagine its original scale. Several well-known sculptural finds are associated with the fountain, some of which are kept in the Ephesus Archaeological Museum.

This site is of interest to those who want to better understand the layout of the ancient city beyond its most famous monuments. A visit to the fountain is usually included in a walk through the central part of Ephesus, where the Odeon, the State Agora, the Temple of Domitian, and other Roman-period structures are located nearby.