The Old Town of Ávila, including the walls and its extramural churches, was declared a UNESCO World Heritage Site in 1985.

The work was started in 1090 but most of the defensive wall appears to have been rebuilt in the 12th century.

The enclosed area is an irregular rectangle of 31 hectares (77 acres) with a perimeter of some 2,516 metres (8,255 ft), including 88 semicircular towers.

The Puerta de San Vicente (Gate of St Vincent) and the Puerta del Alcazar (Gate of the Fortress) are flanked by twin towers, 20 metres (66 ft) high, linked by a semicircular arch.

[1] In 1985, the old city of Ávila and its extramural churches were declared a World Heritage site by UNESCO.