In Silverthorne, CO there is an ice palace. Well, it’s not quite a palace yet. The weather has been too warm for them to keep building it up to the point where it all connects. But they do have these columns and other structures that are about 15-20 feet tall. It’s pretty impressive. Here’s a link to their website which has pictures of the castles when they are fully built (http://www.icecastles.com/).
Gear: Canon 60D, Sigma 10-20mm f/4.0-5.6
Settings: 1/50 sec, f/6.3, ISO 3200