You need to use the Pomegranates (found near the bull's cave) as a sacrifice. Then the door should open.
go to the castle or whatever and open the door
go to the castle or whatever and open the door
you have to give him berries for an offering
hercules
you get a pomagranet from the garden of the sphinx and place it on Hade's alter at his palace. The alter is by the door. The door will then open.
They DON'T open both. The pomegranates only open Hades' door to the underworld put them on his alter in Mythology Island. To open Poseidon's door to his his awesome beach, you need the starfish off of his statue in the museum.
us the pomgranites you get near sphinx on the platform next to the door
give him the fruit from the tree on the door it shoes the fruit put it on the alter
you need a pomegranate from above the sphinx
you have to get the pomegranates
give him ten darchmas
you have to go to Hercules after Zeus yells at you and he will open the door.