St. Nicholas' is one of the medieval churches in Nyköping.The building history is quite complex and the age is therefore unknown. it is probably founded in the 12th century. The church was enlarged in the 14th century and the tower was added a century later. The church was burnt during the two major town fires in 1665 and 1719. The oldest item in the church is a altar made around 1500.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.