The first documented visit into New York Harbor by a European was in 1524 by Giovanni da Verrazzano, a Florentine explorer in the service of the French crown. He claimed the area for France and named it Nouvelle Angoulême (New Angoulême).[83]During the Wisconsinan glaciation, the New York City region was situated at the edge of a large ice sheet over 1,000 feet (300 m) in depth.