At the heart of Malmö lies the Big Square (Stortorget). There is a statue of King Karl X Gustav of Sweden, who took the city from Danish dominion. The ornate Malmö City Hall (built in 1546) is on the east side, and in the northwest corner is Kockska Huset, the house of Jörgen Kock, a German immigrant who became mayor of the city and achieved wealth simply and directly: by taking control of the city mint. In the winter the square becomes a skating rink.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.