Board a private charter through the legendary Thousand Islands archipelago, stepping ashore at the fairy-tale Boldt Castle — a gilded-age monument to love, ambition, and tragedy set on Heart Island.
What to expect
Depart from Alexandria Bay, NY, weaving through a tapestry of granite islands crowned with palatial summer 'cottages.' Dock directly at Heart Island and explore the six-story Boldt Castle at your own pace — turrets, Alster Tower, and all. Your guide layers the castle's haunting backstory (George Boldt halted construction upon his wife Louise's sudden death) against the backdrop of gilded-age excess. Return via the open river, scanning for osprey and great blue herons nesting on uninhabited islets.
Good to know
Alexandria Bay is the gateway; arrange private transport from your port call. Allow at least 4–5 hours including transit. Pre-book Heart Island landing tickets separately at boldtcastle.com (USD 10 pp). Confirm all-aboard time — the 5-hour tour is the one that includes the Boldt Castle stop.