The Horned King's Castle is the castle/home of the Horned King and his minions.
This castle once belonged to a great-king. However, the Horned King somehow took over the castle and stole it. The king was buried below with his sword. Slowly as the King came into power, he collected several skeletons of his old warriors in a sacrificial chamber.
The Black Cauldron Edit
The Horned King one day hears of a powerful pig named Hen Wen who can tell the future and sends the gwythaints to find her. He later goes to the sacrificial chambers and tells his unanimated soldiers