Bozdoğan Aqueduct - Free Audio Guide

The Bozdoğan Su Kemeri (Valens Aqueduct) in Istanbul is a Roman‑era stone aqueduct largely completed in the late 4th century under Emperor Valens and subsequently maintained and altered through Byzantine and Ottoman periods. It served as a major conduit supplying water to Constantinople and stands as a prominent example of imperial engineering and urban infrastructure. Visitors encounter long runs of monumental arches, varying single- and double-tier sections, visible repairs and later interventions that together narrate the city’s layered history. Key points of interest include the arcade segments, masonry details and the aqueduct’s relationship with the historic Fatih urban fabric. The structure is publicly visible from adjacent streets and squares; formal entrances and fees are generally not associated with its viewing, while accessibility and conditions vary by section. Its cultural significance lies in its demonstration of ancient utility, continuous urban use and architectural resilience.