Fortifications are military constructions or buildings designed for the defense of territories in warfare, and also used to solidify rule in a region during peace time. Humans have constructed defensive works for many thousands of years, in a variety of increasingly complex designs. The term is derived from the Latin fortis ("strong") and facere ("to make").

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    Wall on Calle Cairuan

    Western stretch of the old wall surrounding the city, located in Calle Cairuan, extending from the Puerta de Almodovar to Avenida Doctor Fleming.

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    Walls of Thessaloniki

    The Walls of Thessaloniki are the city walls surrounding the city of Thessaloniki during the Middle Ages and until the late 19th century, when large parts of the walls, including the entire seaward section, were demolished as part of the Ottoman authorities' restructuring of Thessaloniki's urban fabric.

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    Weesp (Fortified City of Weesp)

    Weesp is a town and a municipality in the Netherlands, in the province of North Holland. It had a population of 18,255 in 2014. Weesp (Fortified City of Weesp).

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    West Battery, Muiden, Defence Line of Amsterdam

    West Battery is a smaller fort from the Defence Line of Amsterdam (Stelling van Amsterdam). It is located near the waterfront at the western end of town, there is a very small but nice sandy beach next to it.