An ice hotel is a temporary hotel made up entirely of snow and sculpted blocks of ice and therefore an example of novelty architecture. They are built each year in the coldest regions of the world as a way to attract vacationers to resort areas. They are heavily promoted by their sponsors and have special features for travelers who are interested in novelties and unusual environments. Their lobbies are often filled with ice sculptures, and food and beverages are specially chosen for the circumstances. Due to the fact that ice melts in warm weather, ice hotels must be rebuilt each year.