Negotiation of a draft peace treaty between France and Spain took place between February and June 1659, but many critical details remained unresolved. Mazarin and Spain's Dom Luis de Haro personally took charge of the negotiations on 13 August. Their conferences, which continued for three months, were held on the French-Spanish border on the island of Faisans, midway between French Hendaye and Spanish Fuenterrabía, in the River Bidassoa. The resulting Treaty of the Pyrenees was signed on 7 November 1659 and added Artois, the Cerdagne and Roussillon as new provinces of France. It also provided for an even more important diplomatic event carefully arranged by Mazarin, the marriage of Louis XIV with Maria Theresa of Spain, the French celebration of which followed in June 1660 in nearby Saint-Jean-de-Luz. The couple made a triumphant entry into Paris on 26 August 1660. This marriage and accompanying agreements ended, at least for a time, the long and costly wars between the Austrians and France.