Located about an hour north of Prague, Houska Castle has no fortifications, no kitchen, and had no occupants when it was built. It does, however, have something within its walls that no other castle in the world has—a large hole in the ground that many consider to be the literal gateway to hell. Houska was strategically built over the hole (which is fabled to be bottomless) to seal up the gateway and keep demonic creatures from entering our world. The demons are said to be trapped in the wa… (View original article)