Zeus in not in the Temple of Muses (Temple to Apollo).
He is, however, represented in the Museum.
Greek mythology didn't have a separate name for the throne room, it was just part of Mount Olympus.
study the staues in the staue room
Through his throne room to the far right of the island.
After you collect all five sacred items, return to the Tree of Immortality. Zeus will take them. Then you can go to Hercules and talk to him. Use the Touchscreen Mirror to teleport to Hades throne room and Hercules will move the boulder.
You can only enter the throne room of Hades when you have Hercules with you. That cannot occur until after you have collected all five Sacred Items and had them stolen from you by Zeus. Then Hercules will get you in to see Hades, and also Poseidon.
Hercules will roll it away for you. After Zeus obtains the five sacred items, Hercules will finally go with you, and will kick away the rock at Poseidon's throne room as well as removing the boulder at Hades.
You get it in Hades palace for cleaning graffiti for a worker in the throne room.
You have to get Hercules to do it (I forgot how to get him to help, sorry!)
you get a starfish from museum of olympus on posidens face
Once Zeus has taken the 5 sacred items, Hercules will agree to help you, and will move the rocks blocking the way to Hades and to Poseidon. (You will need the Touchscreen Mirror from Aphrodite in Poseidon's realm.)
His throne room is in the Temple to Poseidon, at the bottom of the lake. But you can only reach it when you have Hercules to move the boulder blocking the entrance. If you accidentally enter the Throne Room by slipping past the rock, you may not be able to get out again unless you have the Transporter Mirror.
you have to finish the ladybrinth. once you do, you will come to a room. click on the bourd on the wall