St. Hans and St. Peter churches were built side by side during the 1200s. St. Peter was consecrated to the apostle Peter. St. Hans, which was the larger church, was dedicated to St. John the Evangelist. It was where the Lutheran doctrine for the first time preached on the island. In 1527, however, Bishop Brask turned Lutherans out from the church. But as soon as the bishop sailed to Denmark, Lutherans worships were started again. Churches were demolished in 1600-1800s and the stone was used among others to construct Lythbergska house. In 1982 a beautifully decorated gravestone was found in the ruins of in St. Hans, dating from 1050s.References:
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.