Hogwarts Castle is a large, seven-story high building supported by magic, with many towers and turrets and very deep dungeons, built in the late Early Middle Ages (c. 993) by a wizard architect and the four most celebrated wizards of the age: Godric Gryffindor, Helga Hufflepuff, Rowena Ravenclaw and Salazar Slytherin. The Castle houses Hogwarts School of Witchcraft and Wizardry, regarded as the finest wizarding school in the world.
Hogwarts is built in a valley area — surrounding mountains are part of the landscape — with the fairly large Black Lake to the south of the main building. The huge main oak front doors leading into the Entrance Hall face the west, and open up to sloping lawns. The deep Forbidden Forest extends around to the west of the Castle. There are also exterior greenhouses and vegetable patches on the school grounds.
Hogwarts is located in the Scottish Highlands, near the all-wizard village of Hogsmeade and "not far" from Dufftown, in Banffshire, and Achintee, in Lochaber.