Treaty of Aix-la-Chapelle (1668)

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thumb|350px|Areas gained and returned by Louis XIV in Aix, 1668

The Treaty of Aix-la-Chapelle or Aachen ended the War of Devolution between France and Spain. It was signed on 2 May 1668 in Aachen (). Spain acceded on 7 May 1669.

Terms of the treaty

The treaty was mediated and guaranteed by the Triple Alliance of the Dutch Republic, England and Sweden at the First Congress of Aix-la-Chapelle. By the terms of the treaty, Louis XIV returned three cities, Cambrai (Kamerijk), Aire (Ariën aan de Leie), and Saint-Omer (Sint-Omaars) to Spain. He also returned the province of Franche-Comté.