Bergkvara Castle had originally five floors and four corner towers. It was probably built by Arvid Trolle around 1470-1480. It was owned by his family 150 years and played an important part as a political and economical power centre. Nils Dacke, the leader of the famous peasant revolt, besieged the castle in 1542 and then attacked and burned it to the ground. The castle was left to decay until in 1794 count Arvid Eric Posse build a new main building next to the old ruins.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.