Mary Island State Park
Visit Mary Island State Park
Popular places to visit

Boldt Castle
After visiting Boldt Castle, make a plan to see the other sights and activities in Alexandria Bay. Amble around the area's riverfront or seek out the local tours.

St. Lawrence Islands National Park
Explore the islands, islets and peninsulas that dot the St. Lawrence River between Kingston and Brockville.

Keewaydin State Park
You can take time to visit Keewaydin State Park during your travels to Alexandria Bay. Stroll along the riverfront or visit the shops in the area.
Boldt Yacht House
Learn about the local history of Wellesley Island with a stop at Boldt Yacht House. Amble around the area's riverfront or seek out the local tours.
Cornwall Brothers Museum
You can study the exhibits at Cornwall Brothers Museum, a museum with a storied past, during your travels to Alexandria Bay. Stroll along the riverfront or seek out the local tours.
River Hospital
Though River Hospital might be what brings you to town, perhaps you'll have a chance to explore more of Alexandria Bay while you are here.
Best Lodging Options Near Mary Island State Park
Check availability on hotels close to Mary Island State Park

Riveredge Resort

Capt.'s Inn & Suites

Capt. Thomson's Resort

Luxurious 3-bedroom custom built home in the heart of the Thousand Islands

Luxury Waterfront Cottage 1000 Islands 6 BR, 4.5 Baths Book your 2025 vacation!

Villa & Boathouse on quiet bay with marina acess- short walk or bike to Alex Bay
