The Glass Palace is the castle and home of the late King of Adarlan. It is located in Rifthold, the capital city of Adarlan, where it sits on a hill. The castle was destroyed in Queen of Shadows by Dorian Havilliard.
The Glass Palace is made of reinforced glass atop of the original stone castle. It has ten spires that pierce the sky. In size, it is described as "gargantuan." It's a vertical city of shimmering, crystalline towers and bridges, chambers, turrets, domed ballrooms, and long, endless hallways.
It supposedly cost a kingdom's wealth to construct.
Celaena's chambers are a big set of rooms consisting of a bedroom with an attached bathing chamber and a dressing room, a small dining room, and a music and gaming room.
Each room is furnished in gold and crimson and the bedroom is also decorated with a huge tapestry hanging along a marble wall, with couches and deep-cushioned chairs scattered around in a tasteful manner.
The balcony overlooks a beautiful fountain in one of the palace gardens.
The throne room is where the Glass Throne sits. The floor is made out of red marble with white veins that illuminate in sunlight. Chandeliers and torches hang all around the room. There are no windows, only a wall of glass that looks out to the sky. There is a fireplace to the left that occupies most of one wall.
The door to the library is located in a long hallway. The twenty foot oak doors bear dragons that grow out of either side of the stone wall.
Inside, the library stretches far and wide, so much so that it looks dark despite the candelabras. The floor is made out of black and white marble and large mahogany tables with velvet chairs sit on the floor. There is also a fireplace and mezzanines, bridges, ladders, and railings to access different levels of the library.
It is said that the library contains over a million books.
There are many secret passages throughout the castle, all leading to the central location of Elena's tomb. One of these passages is in the room given to Celaena Sardothien during the King's Tournament. Mort is in one such passage.
Celaena Sardothien sees The Glass Palace for the first time since being in Endovier. She is then given a room in it to stay during the King's Tournament. During this time, she discovers the secret passages.
- Due to the glass, it is possible that the architects built a cooling system into the palace to counter the greenhouse effect that would occur, making the palace unbearably hot.
- The glass appears to be reinforced, as normal glass would likely shatter from the weight of the palace itself.