In the later part of the Third Age, Gondor was between the sea in the south, the Mountains of Shadow in the east, and the White Mountains in the north; in earlier times the land of Gondor reached farther north. The city Osgiliath, built over the river Anduin, became the capital of Gondor. Isildur also founded the city Minas Ithil east of the Anduin, and his brother Anárion founded the city Minas Anor west of the Anduin on the mountain Mindolluin.