The ancient Valens Aqueduct in the metropolis of Istanbul, Türkiye, has the potential to raise public awareness of historical water management as well as of current and future water supply challenges. This monument stands as a highly visible remnant of what was once the longest water supply line of the Roman world. Although recognized and preserved as a heritage object testifying to its multi- layered history, it has lost its original function and its relationship to water management. We present a program that aims to develop solutions for revitalizing its tangible and intangible values as a prime example of water supply, management and culture through the ages. In this way, this heritage object can regain a connection with water, and water can become an engine for sustainable development.