Incredible Ice Castles Grown by a Minnesota Man Using Geothermal Heating Systemthis year the giant ice castle is a tall, long wall measuring 65 feet at its height and 85 feet long with multiple tiers of ice layers. This year’s project began in November when Hanson set the poles and started growing the initial layers the first week of December. Now that it’s February, the ice castle will start to melt and eventually disintegrate around the end of April.
Read more and see more photos: Incredible Ice Castles Grown by a Minnesota Man Using Geothermal Heating System Minnesota Winter Wonderland – Inhabitat – Green Design Will Save the World