Yttergran granite church dates from the late 1100s and it is the smallest one in the diocese. The church had originally no tower, although one was added relatively early in the 13th century. The interior decoration dates mainly from about 1480, when famous medieval master Albertus Pictor painted murals. The paintings are in a good condition and are well worth seeing.
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.