The mystic
castle that served as the
Mystical center of
Eternia. according to the
cartoon, by
Filmation, It served as the home of the
Sorceress. however in the
comic book that was included with the
figures it was said that
Castle Greyskull could only be open when the
swords of
He-man and
Skeletor were joined. thus a small
crevis as well as a
outcroping of
plastic were molded into the
swords.