This winter, the Mall of America in Bloomington, Minn., added a chilling attraction to its entertainment offerings. On its north parking lot, visitors will see a series of icy structures. The Ice Castles, as they are named, are slowly "grown" by fusing icicles together with water. They'll rise throughout the season, eventually reaching over 40 feet high and stretching across two acres. The artist behind the project is Brent Christensen, who got his start by building ice structures in his front yard for his family a few years ago. Last year, Christensen brought his ice castles to Silverthorne, Colo. The Ice Castles will remain open until about late February, weather permitting. General admission is $10. For more information, visit http://www.mallofamerica.com/events/feature/ice-castles.