Aqueducts

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

This small museum tucked within a subway station holds pieces from Madrid's past.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

The surviving pieces of an ancient aqueduct that may have fed into the lost Hanging Gardens of Babylon.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The construction of a tram line unveiled hidden remnants of the old medieval city.

A rotating bridge that carries a little canal over a larger one.

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'