When we are talking about unique and innovative designs. The first thing that comes to mind are structures designed by prominent architects. Architects such as Frank Ghery, Zaha Hadid, Thom Mayne, or Jacques Herzog and Pierre de Meuron. Their cutting edge designs represent what architecture has achieved in this period. Structures like the Guggenheim museum at Bilbao or the bird's nest stadium. Structures that are exceptional achievements of both design and engineering standards.
Technology has been advancing that a lot of daring and bold designs are popping up all around the world. That's why I was amazed when I first saw the Ice Hotel back in college. Such hotel masterpieces are made of snow and ice, or a combination of the two that they call snice.
Most hotels are usually built to accommodate the growing number of tourists in a place. Ice hotels are built to attract and accommodate visitors at the same time. Reservations have already been made before the building of an ice hotel starts. Its popularity has been growing since they began building Ice hotels way back in 1989.
The concept of building a whole hotel made up of "snice" would arouse curiosity in anybody's mind. The mere thought of staying within a building made of ice is like being in a fairy tale. Not only are the rooms made of ice most of its furnishing and fixtures are made of ice as well. I would consider these hotels as masterpieces on ice. It's too bad though that these structures are only temporary and seasonal.