Last year a group from the USA decided to beat our 2008 Igloo record and built a 27 ft inside diameter snow Igloo and also ranted that they blew us out of the water. To me an Igloo record belongs to Canada so we decided to bring it back north of the border. Our new structure measures more than 30ft inside diameter and built entirely of ICE blocks.....much heavier than snow blocks....take that. I will try to convince Guinness that there is a difference between snow and ice builds and maybe they can accept both. This Igloo was built by team Zip Zag Canada.