Dillon's Ice Castles to open Dec. 19 at limited capacity Ice Castles and last updated 2020-12-18 08:59:36-05 DILLON â A winter wonderland in Summit County is returning the weekend of December 19th with new enhancements designed with safety in mind. Ice Castles in Dillon are back with ice slides, crawl spaces, caves, and fountains illuminated at night. The entire construct spans about an acre, and while it may physically appear similar to castles in the past, the experience will be slightly different. "We are thrilled to welcome families back to Ice Castles at Dillon Town Park this winter," Ice Castles CEO Kyle Standifird said in a November press release.