Castle Grayskull

Castle Grayskull is a legendary/mythical location situated in a barren wilderness. It serves as home to The Sorceress and to the mysterious and rarely-seen Spirit of Grayskull, as well as a place of refuge for He-Man and all those considered his friends. Its origins are unknown except for the fact that it was constructed to protect an unspecified source of power from those who would misuse it. It is a frequent target for the forces of evil.

the addition of a large Crystal Chamber, accessible only by a secret "door" in the floor of a secluded chamber. Within this chamber is the Orb of Power, within which lies the combined powers of the Elders. Prior to its bestowal upon Prince Adam, the Sword of Power was also stored in the depths of the Crystal Chamber.

Other locations within the castle include the Throne Room (trophy room); a massive library (blue room); a room that houses an enormous, mystical mirror used to view both the past and present; an underground colosseum; a secret chamber devoted to King Grayskull; the area behind the eyesockets of the castle's facade; and, numerous corridors that are draped in illusions to confound invaders.

Once made of white marble, and at the center of King Grayskull's bustling kingdom, the castle fell into a state of disrepair following a devastating battle with the forces of Hordak. Over countless years, the castle was almost entirely forgotten by the populace. Its true purpose, and the secrets within, are now known to only a very select few. Like the Filmation version, it is surrounded by a seemingly bottomless abyss, and is backed by a sheer cliff. This abyss was revealed to have been created during the final confrontation between King Grayskull and Hordak.

Castle Grayskull once originated in Planet Eternia, but during the unexpected attack from The Organization while aiding Skeletor for his goal to attain the castle power, the castle then been teleported out into a spacetime dimensional plane where Skeletor wouldn't get a hand on it until nowaday, the castle is still unknown to its whereabout due to also with the sword of power.