There's a castle made entirely of ice - Apparently.
Located in Jukkasjärvi, Sweden, the Ice Hotel (also known as Jukkasjärvi Ice Hotel) is rebuilt every winter using natural ice and snow. The castle's design and architecture change annually, with up to 90 artists and designers contributing to the project. The hotel features intricate ice sculptures, rooms, and even a chapel, all made from blocks of ice harvested from the nearby river. The Ice Hotel is rebuilt every spring, when the weather warms up, and the ice melts.