Castle Grayskull is a great craggy skull shaped lair located on the planet Eternia. It serves as He-Man's base of operation, and also serves as the locus of his power.
It has been the target of numerous attacks by Skeletor, Hordak and the Snake
Men, all of whom believe that the secrets inside
will allow them to conquer Eternia.
Castle Grayskull, which resembles a gigantic skull, is the source of the Power of Grayskull. Inside the Castle lives the Sorceress. Part falcon and part
woman, she possesses the magical ability to fully
change herself into a falcon. The Sorceress is among the most powerful
magic-wielders on Eternia. She has limited use of the power held within Castle Grayskull, but only for the purpose of its protection. She also communicates telepathically with He-Man, and was the person responsible for granting Prince Adam the power to become He-Man.
As part of the very
popular 80's toyline, a Castle Grayskull
toy was released, to almost unanimous adoration. It had its share of gimmicks; an elevator, trap
door, draw bridge etc.