Aqueduto de Pegões

Top choice in Tomar

This astonishing aqueduct, striding towards the monastery from the northwest, was built between 1593 and 1613 to supply water to thirsty monks. Its 180 arches, some of which are double-decker, are thought to have been designed by Filippo Terzi. It’s best seen just off the Leiria road, 2.3km from town, where it winds along a dramatic turn. You are free to climb about the top at will.