10237 The Tower of Orthanc 10237 The Tower of Orthanc is a set in the theme The Lord of the Rings which was released on July 1 , 2013 , and is the largest Lord of the Rings set to date . Description . Dungeon . The dungeon is the first floor of Orthanc is held up two 2x8 pillars , on the floor there is two bones ( kept in place by red holders ) , two minifigure skulls and a grey rat . In the background there are some glowing eyes inside cells and three warg s achieved by stickers . Entrance . The entrance is the second floor of Orthanc and has two white hand banners on opposite sides , a small corridor leading to a dead - end and a grey microfigure posing as a small statue . On the floor there ' s a trapdoor leading to the dungeon which can be controlled by a piece just below meant for unwanted visitors . Throne Room . The Throne Room is the third floor of Orthanc and includes another version of the Palantír this time a small grey and green ball which can light - up by pushing the chandelier on the roof of the second floor activating a light - up brick just below the Palantír . This room is very similar to the The Wizard Battle but does not have the feature in Saruman ' s throne . Alchemy room . The Alchemy room is the fourth floor of Orthanc and includes a bomb , the same as in Helm ' s Deep . It also contains a table with a couple of potions on top , in the middle there ' s a cauldron with silver 1x1 round studs which could represent gunpowder or metal . Library . The Library is the fifth floor in the tower and contains 5 paintings of the other wizards of Middle - earth including Saruman himself , Radagast and Gandalf the Grey . Around the room there ' s a table , two books and a scroll . In the middle of the room is the space for the foldable ladder on the ceiling leading to the attic . Attic . The attic is the sixth and final floor of Orthanc and includes a helmet and a breastplate both with the white hand of Saruman and a scimitar on display . Also in this room is the other 3 staffs of the lost wizards one of which is Radagast ' s . On the wall is a picture of the Eye of Sauron on top of Barad - dur on both sides of the picture are two keys meaning to represent the two keys of the two towers of Middle - earth including The Tower of Orthanc , the other being Barad - dur located in Mordor . On the floor is the ladder down to the library . Treebeard . Treebeard , an Ent , is included . He has flexible joints , and a throwing function at the back , allowing him to catapult minifigures held in his hand . Background . The Tower of Orthanc was the tower in the middle of Isengard . Once a fortress of Gondor , it was now home to Saruman , the leader of the wizards , until he studied too deep into the arts of Sauron and tried to convince Gandalf to join with the dark lord . When Gandalf turned down his offer , they fought and Gandalf was imprisoned . After the battle , Saruman turned all of Isengard into a giant stronghold to create Uruk - hai . After Gwaihir rescued Gandalf from the tower , the grey wizard was able to bring news to the elves that Saruman had betrayed them . It continued to serve this evil role until ( after burning down the southern edge of Fangorn ) it was flooded by Treebeard and the other vengeful Ents .