2-370-631 - Samuel Magal/Sites & Photos/Heritage Images

The Aqueduct of Segovia (Acueducto de Segovia), Segovia, Spain, 2007. Begun in the 1st century AD under Emperor Domitian and probably completed under Trajan in the early 2nd century, the aqueduct brought water to Segovia from the Frío River 10 miles (16 km) away. It was declarated a Historic Monument in 1884 (the Old Town of Segovia was declared a World Heritage Site by UNESCO in 1985). According to a popular legend, sloth, rather than Romans, was responsible for the construction of the aqueduct. A woman who worked as a water carrier, fed up with hauling her pitcher through the steep streets of the city, made a pact with the devil.