The upcoming weekend may be the last this season for Lake George Ice Castles. Admission is secured by advance purchase online — for specified times. As of a couple days ago, tickets were available to tour the multi-acre frozen fortress on Thursday, March 2, from 6 p.m. to 9 p.m., Friday, March 3, and Saturday, March 4, from 6 p.m. to 10 p.m., as well as Sunday, March 5, from 6 p.m. to 8 p.m.