Grenell Island
Visit Grenell Island
Tours & day trips
See all 17 activities
3-Hour 1000 Islands Cruise from Gananoque with views of Boldt Castle
Cruises & boat tours
See all 5 activities
Gananoque: 1000 Islands Cruise & Optional Boldt Castle Entry
Air, helicopter & balloon tours
See all 3 activities
Thousand Islands Two Castle Helicopter Tour
Popular places to visit
Grass Point State Park
You can take time to visit Grass Point State Park during your travels to Fishers Landing. Make some time to visit the monuments while you're in the area.
Canoe-Picnic Point State Park
You can take time to visit Canoe-Picnic Point State Park during your travels to Clayton. While you're in the area, stroll along the riverfront.
Thousand Islands Winery
You can enjoy a tasting or tour at Thousand Islands Winery during your travels to Alexandria Bay. Amble around the area's riverfront or seek out the local tours.
Coyote Moon Vineyards
You can enjoy a tasting or tour at Coyote Moon Vineyards during your travels to Clayton. Stroll along the riverfront or seek out the local tours.
Clayton Marina
Explore the waterfront of Clayton Marina and enjoy other activities such as boating in Clayton. Amble around the area's riverfront or seek out the local tours.
The Clayton Opera House
You can make plans for a show at The Clayton Opera House during your stay in Clayton. While you're in the area, stroll along the riverfront.
Top Hotel Deals
Check availability on hotels close to Grenell Island
1000 Islands Harbor Hotel
Riveredge Resort
Chateau Country Inn
The Clipper Inn
Capt. Thomson's Resort
Bonnie Castle Resort & Marina
West Winds Motel & Cottages
Capt.'s Inn & Suites
