The shack is on the outskirts of Hogsmeade, the only entirely wizarding settlement in Great Britain, a village close to Hogwarts School of Witchcraft and Wizardry. The Shrieking Shack is believed to be the most haunted building in Great Britain. It can be reached by a tunnel underneath the Whomping Willow, which can only be seen when the Willow is frozen by a touch of the knot on one of its roots.
