Once you have recovered the Five Sacred Items (pearl, hydra scale, minotaur ring, flower, and whisker), you cannot immediately enter the Throne Rooms, because it will take the strength of Hercules (and he won't help).
Instead, return to the Tree of Immortality where Athena will help you assemble a secret message on the items. When Zeus appears and steals them, Athena will send you back for Hercules, who will finally agree to help you reach the two Throne Rooms.
You will need the Touchscreen Mirror from Aphrodite's test in the realm of Poseidon.
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 not help you until you have collected the 5 sacred items and had them stolen by Zeus. You will need the Touchscreen Mirror from Aphrodite's test on the beach. Transport yourself with Hercules to the Hades door and he will roll back the big rock. He will do the same for the rock blocking Poseidon's throne room.
The door to Hades realm is opened by an offering of pomegranates, which you can find above the creature in the Garden of the Sphinx. The door to the throne room behind Cerberus cannot be opened until after you have gathered all five Sacred Items, and then lost them to Zeus. Then Hercules will help you.
Greek mythology didn't have a separate name for the throne room, it was just part of Mount Olympus.
The only Sacred Item in Hades' realm is the whisker from Cerberus. Use the pomegranates from the Garden of the Sphinx to enter the realm, and ride the River Styx to reach Cerberus. Play the reed pipe song from Euterpe to lull Cerberus so you can take a whisker (blue-green-yellow-blue-red-green). When you are ready to go to Olympus, you will receive the Crown from Hades in his throne room.
In Poptropica's Mythology Island, Hades' throne room is located in the Underworld, which is accessed through the entrance in the Tree of Immortality. Once you navigate through the challenges in the Underworld, you will reach Hades' throne room where you can defeat him and complete the island quest.
You get it in Hades palace for cleaning graffiti for a worker in the throne room.
Place it on the offering stand in Hades throne room.
You can find the workman in Hades' Throne Room on Mythology Island by first completing the tasks for Hades in the other realms, then returning to Hades' Throne Room where you'll find the workman. He'll give you a key that unlocks a special room in the labyrinth.
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.
The Temple of Hades is in the Grove of Temples. You will need the Pomegranates from the tree in the Garden of the Sphinx (far left of the island). Place them on the altar and go down into the abyss, and cross the River Styx to find Cerberus and the Hades Throne Room.
if your talking about Zeu's throne room, ask Heracules If ur talking about Posiden youhave to put a starfish on the palette. If you are talking about Hades, you have to put a pomengranete
Through his throne room to the far right of the island.
Hercules will not help you until you have collected the 5 sacred items and had them stolen by Zeus. You will need the Touchscreen Mirror from Aphrodite's test on the beach. Transport yourself with Hercules to the Hades door and he will roll back the big rock. He will do the same for the rock blocking Poseidon's throne room.
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.)
You have to get Hercules to do it (I forgot how to get him to help, sorry!)