IceWing palace
From Wings of Fire Fandom Mirror
The IceWings' palace is where Queen Glacier resides, and also home to several IceWing guards and soldiers. Being part of the Ice Kingdom, it is presumed to be constructed of ice. It is far enough north that any dragon other than an IceWing would quickly freeze to death; therefore Queen Glacier never had to worry about intruders from the other dragon tribes. Blaze doesn't live in the IceWing palace, but she has her own fortress on the edge of the kingdom.
It is said that Queen Glacier has a dungeon in her palace, but this has not been proven. Glory stated that if she and the other dragonets trapped in the palace, they would be dead by the end of the day, as they would freeze to death.