You’ll board a glass bottom boat for a close-up look at shipwrecks and underwater life on the St. Lawrence River before landing on Rock Island to climb its historic lighthouse and wander past old keeper cottages. With local guides sharing stories and plenty of time for photos or just staring at the water, this is one of those tours you’ll remember for little reasons.
Ever wondered what the bottom of the St. Lawrence River actually looks like? I hadn’t, honestly, until we stepped onto this glass bottom boat in Clayton for our 1000 Islands day trip. The water was clearer than I expected—almost cold-looking, even though the sun was out—and you could see these old timbers from a shipwreck just drifting under us. Our guide, Mike, kept pointing out osprey nests and telling stories about the islands’ names (I think he made at least one up for fun). He had this way of pausing so you’d look exactly where he wanted—like a magician but with birds and river stuff instead of cards.
There’s something about gliding over water that makes you notice small things—the way the air smells different out here, kind of sweet and green at the same time. We spotted a blue heron standing so still it looked fake until it blinked. And then someone shouted “loon!” and everyone scrambled to one side (the boat rocked more than I liked, but nobody seemed worried). The main keyword here is definitely “glass bottom boat tour 1000 Islands”—it’s not just about what’s above; seeing what’s below felt weirdly intimate.
When we docked at Rock Island, I didn’t expect to care much about lighthouses. But climbing those spiral stairs—narrower than they look!—and stepping into that lantern room with all that wild wind around you… yeah, I still think about that view. You can see Canada right there across the river. The old keeper’s cottage is now a museum with whale oil cans and faded photos; I tried to imagine living out here through winter storms (no thanks). There’s a tiny gift shop too—I bought a postcard because it felt right.
I guess what stuck with me most was how quiet it got when we walked around the island after lunch (they’ll pack you one if you call ahead). Just water slapping rocks and some gulls arguing overhead. It wasn’t perfect weather or anything—windy enough to lose your hat if you weren’t careful—but somehow that made it feel more real.
The tour departs from Clayton in the United States.
The scenic boat tour lasts between 2 to 3 hours.
Yes, admission to Rock Island Lighthouse is included in your tour.
Yes, guests may climb to the top of Rock Island Lighthouse for panoramic views.
Yes, there are restrooms available on board the glass bottom boat.
You can pre-order picnic lunches for an additional fee by calling ahead.
Yes, transportation options are wheelchair accessible and suitable for all fitness levels.
Yes, service animals are allowed on board.
You may spot ospreys, eagles, blue heron, deer, muskrats, minks, and loons during your cruise.
Your day includes sightseeing by glass bottom boat along the St. Lawrence River with narration from a local naturalist guide; admission to Rock Island Lighthouse; time to explore its museum and gift shop; restroom access on board; plus optional pre-ordered picnic lunches if you call ahead before departure.


Secure checkout on viator.com
Do you need help planning your next activity?