The Aqueduct

Paulo Costa - Lisbon, Portugal

25 sec. long exposure fo the Águas Livres Aqueduct (Portuguese: Aqueduto das Águas Livres, "Aqueduct of the Free Waters") is a historic aqueduct in the city of Lisbon, Portugal. It is one of the most remarkable examples of 18th-century Portuguese engineering. The main course of the aqueduct covers 18 km, but the whole network of canals extends through nearly 58 km.