Corning Museum of Glass
Far more entertaining than a glass museum has any right to be. Live hot glass shows run through the day where a gaffer pulls molten glass out of a furnace and shapes it into something recognisable in about fifteen minutes, and kids are riveted. You can book Make Your Own Glass sessions where children blow an ornament or fuse a picture with staff doing the dangerous parts. The collection itself spans 3500 years and the contemporary gallery is full of enormous sculptural pieces. A genuine full-day destination and one of the strongest indoor options in the Finger Lakes.