Reservoir

This stop on the Camino de Santiago stands high above the underwater ruins of a medieval town.

Staten Island's original central park is the former home of the city water supply as well as thousands of immigrant graves.

A 2,000-year-old engineering wonder hides beneath an Italian town.

The remains of a remote village that once housed over 1,200 dam workers and their families.

This oddly beautiful water cistern is a techno-temple to the wet stuff and a multimedia masterpiece.

London's marvelous wildfowl reserve along the Thames.

You can row a boat through this ancient underground reservoir.

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

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

The Andean town where every single building is decorated with a brightly colored frieze.

One of few surviving standpipe water towers in the U.S.

An abandoned concrete jungle surrounded by a lush park.