Carmagnola is a comune (municipality) in the Metropolitan City of Turin in the Italian region Piedmont, located 29 kilometres (18 mi) south of Turin. The town is on the right side of the Po river. The nature of the soil determined, as time was passing, the accumulation of the river sands.

Carmagnola borders the following municipalities: Poirino, Villastellone, Carignano, Lombriasco, Ceresole Alba, Racconigi, Sommariva del Bosco, Caramagna Piemonte.

The municipality is mentioned for the first time during the 11th century. The land, originally owned by the Arduinic dynasty, passed to the Marquisate of Saluzzo, who had a castle built here. The Saluzzo dynasty soon underwent a rapid decadence ending with a French domination period which lasted 40 years. In 1588 Carmagnola became a possession of the House of Savoy, when Charles Emmanuel I besieged and conquered it. French took possession of Carmagnola a second time during the 17th century, during the civil war between Madamisti and Principisti (supporters of the French and the Savoy dynasty respectively). In this period (1637-1642), the three main subdivisions were razed to the ground as they were conflicting with the defence structures, and immediately re-built around 1.5 km from their original position, where they still are at the present time.

In 1690 the city was once again occupied by the French general Catinat, but just one year later Victor Amadeus II of Savoy brought it back among Piedmontese possessions. While its defence buildings were being demolished and its strategic role was progressively decreasing in importance, the town could finally develop agriculture and commerce, mainly of hemp and ropes, which were exported in great quantity to Liguria and souther France. The characteristic of both agricultural and commercial site remained important until after World War II, which caused a massive immigration and a rapid urbanistic expansion.

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