Segovia is a historic a city in the autonomous region of Castile and León, Spain. Its centuries of settlement have resulted in a rich architectural legacy, including medieval walls, Romanesque churches, a former royal palace and a Gothic cathedral. Located on the plains of Old Castile, near Valladolid and the Spanish capital, Madrid, Segovia's iconic ancient Roman aqueduct has more than 160 arches, most in the original mortarless granite, and stands above Plaza Azoguejo in the heart of the city.