Family Discovery Day at Boldt Castle

Join us for a day of exploration and fun at the iconic Boldt Castle on Heart Island in Alexandria Bay, NY! On June 20, 2026, from 10:30AM to 4:30PM, families can enjoy hands-on exhibits and activities from a variety of local organizations including the Antique Boat Museum, NY State Troopers K9 Unit, US Coast Guard, and more. All activities are included with regular castle admission.