Willisau castle was built for bailiffs in 1690-1695 by the city of Lucerne. The castle is one of the most important secular Baroque buildings in central Switzerland. Particularly impressive is the design of the first two floors. The magnificent stucco works in the courtroom were created by the two artists from Lugano, Augusto Giacomo and Pietro Neurone. The impressive ceiling paintings were created by Francesco Antonio Giorgioli from Ticino.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.