Mary Island State Park Tours

Visit Mary Island State Park

Get away from it all and soak up the tranquil natural surroundings of Mary Island State Park. Take advantage of any walking tracks and picnic areas spread across this protected habitat.

This protected natural landscape is situated in Wellesley Island, a place that has so much on offer! Boldt Castle, St. Lawrence Islands National Park, and Thousand Islands Bridge are other popular sightseeing opportunities nearby when you've finished up at Mary Island State Park.

Plan a trip to see Mary Island State Park

Price found within the past 48 hours. Click for updated prices.

Hotel Watertown

$592

per person

Mar 13 - Mar 15

found 15 hours ago

Roundtrip non-stop flight included

Charlotte (CLT) to Watertown (ART)

5/10 (2 reviews)

Chateau Country Inn

$610

per person

Mar 13 - Mar 15

found 15 hours ago

Roundtrip non-stop flight included

Charlotte (CLT) to Watertown (ART)

9.6/10 Exceptional! (136 reviews)

I am able to bring my own food!

Reviewed on Dec 11, 2025

Comfort Inn & Suites Watertown - 1000 Islands

$612

per person

Mar 13 - Mar 15

found 15 hours ago

Roundtrip non-stop flight included

Charlotte (CLT) to Watertown (ART)

8.6/10 Excellent! (1,004 reviews)

Clean room, nice staff. Only clean every third night of your stay

Reviewed on Dec 15, 2025

Popular places to visit

The tiny islands in the St Lawrence River are actually the tops of worn-down mountains. Do the cruise around all the quirky ways that people have added structures to them. And then you come across Boldt castle amongst all the islands! #water #boats #castles

Boldt Castle

4.5/5(248 reviews)

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

4.5/5(32 reviews)

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

This is the view from the back of my Jeep in campsite #23; right on the river and only $18 per night! Perfect place to car camp.

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

17 Holland Street Alexandria Bay NY

Otter Creek Inn

2 Crossmon Street Extension Alexandria Bay NY

Thousand Islands Home w/ views of Boldt Castle

Wellesley Island NY

Bonnie Castle Resort & Marina

31 Holland Street Alexandria Bay NY

Outdoor Adventure Home: Golfing, Hiking & Kayaking

Wellesley Island NY

Thousand Island Hart House

21979 Club Rd Wellesley Island NY

The Ledges Resort and Marina, Lighthouse

Alexandria Bay NY

The Ledges Resort and Marina, Loon Cottage

Alexandria Bay NY

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

Alexandria Bay NY

See all 542 properties in Mary Island State Park

Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Explore a world of travel with Expedia

Alexandria Bay Vacation Rentals