For what, in fact, fought for?

On the border of Spain and France, passing along the river Bidasoa rapolozhen little Pheasant Island. In 1659 there was a peace treaty between the two countries, ending the Thirty Years' War. Since then, the island has the status of a condominium that is under the control of the two countries at the same time, with the change of the actual administrator occurs periodically. Six months in charge of the island municipality Spanish town of Irun, the other six months - the power of the French town of Hendaye. On the island nobody lives, visitors here also are not allowed.