The Aviation Museum of Central Finland exhibits the aviation history of Finland, from the early 1900s until today. The exhibition consists of aircraft, engines and aircrew equipment which has been used by the Finnish Air Force. The equipment of the Air Force Signals Museum has its own section. A large collection of scale models gives a wider perspective to the whole field of aviation.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.