efe-epaBy Nacho Ballesteros Lisbon

Lisbon, considered among the most attractive European capitals, hides under its streets a labyrinth of tunnels and passages that formed part of a complex system of underground canals that helped end the scarcity of potable water in the city more than two centuries ago.

This underground city was built in the 18th century as part of a project to quench the thirst of Lisbon, which could not use the water of the Tajo river due to its high salinity levels.