The Treaty of Aix-la-Chapelle of 1748, sometimes called the Treaty of Aachen, ended the War of the Austrian Succession following a congress assembled on 24 April 1748 at the Free Imperial City of Aachen—called Aix-la-Chapelle in French and then also in English—in the west of the Holy Roman Empire. The resulting treaty was signed on 18 October 1748 by Great Britain, France, and the Dutch Republic. Two follow-up implementation treaties were signed at Nice on 4 December 1748 and 21 January 1749 by Austria, Spain, Sardinia, Modena, and Genoa.