An unforgettable kayaking adventure from Gananoque to Boldt Castle

Last summer, Scott and I spent a few days in the Thousand Islands and stayed at one of the best Airbnbs we’ve ever booked. It’s a cozy cottage right on a peninsula near the Howe Island Ferry dock — water on both sides, total peace and quiet, and you can drive right to it.

We sipped coffee by the water, kayaked all day, and ended our nights with a fire inside and out. The bed was cozy, the kitchen had everything, and the upstairs loft was perfect for late-night hangouts. It could easily fit two couples and a couple of kiddos. We even had three adorable ducks visit us every day, which may have been my favourite part of this accommodation!

We floated around in our tube watching ospreys and kingfishers fish. The sunrises and sunsets were unreal. Huge thanks to our host, Sam — so kind and helpful!

From there, we launched into some pretty unforgettable paddling adventures. Here are five spots we loved and think you will too.

Paddling Tip: With literally thousands of islands, it’s easy to get turned around. Bring a map or fully charged phone, and be aware of where the main shipping channels are — big boats don’t slow down for kayakers!

1. Half Moon Bay – Bostwick Island

This was my absolute favourite spot we paddled to.

Half Moon Bay is a natural amphitheatre formed by massive rock walls on Bostwick Island. Every Sunday in the summer, it becomes a floating place of worship where people paddle in, stay in their boats, and take part in a non-denominational Christian service. We weren’t there on a Sunday, but the vibe was still pretty special. The acoustics are wild — you can hear your voice bounce back off the rocks. Peaceful, scenic, and full of character.

Tip: Paddle in early in the morning for calm water and the best light for photos.

 

2. The Briton Shipwreck – Near Mudlunta Island

If you’re into a bit of history with your paddling, this one’s a must.

The Briton was a 19th-century coal schooner that sank many years ago and was laid to rest on the west shallow shores of Mudlunta Island. You can paddle right over it — the water is so clear you can see the massive hull and steel supports lying just beneath the surface. It’s haunting and beautiful at the same time. Bring a polarized lens if you're into photography! Sadly, I didn't bring my camera with me on this adventure, but I will next time.

Paddling Tip: This area is shallow but open — calm days are best to avoid current or boat chop.

3. Joel Stone Lighthouse & Gananoque River Paddle

A perfect blend of nature and small-town charm.

We launched from Gananoque and made our way around the iconic Joel Stone Lighthouse, weaving around cruise ships (they’re everywhere — so keep an eye out!). Then we paddled along the shoreline, past the Thousand Islands Boat Museum, and into the Gananoque River. You can’t go far before reaching the dam, but it’s a lovely, easy stretch to explore. 

We had hoped to stop at the Watermark Restaurant for a waterside lunch, but unfortunately, it was closed that day. It’s right on the waterfront and looks like the perfect spot to dock the kayaks and refuel. Next time for sure!

The Joel Stone Lighthouse has stood here since 1856, guiding ships through the tricky channels of the Thousand Islands for generations. It’s a beautiful old stone structure with a bright red roof, and it adds a perfect touch of history to your paddle route. A quiet reminder of Canada’s maritime roots.

Side Note: The Boat Museum was closed when we passed by, but it's on our list for next time — it looks amazing for families and history buffs alike!

4. Sunset Paddle Around Beau Rivage Island

This was one of those evenings that just felt so magical!

We paddled out around Beau Rivage Island at golden hour and were treated to swans, geese, and a stunning blue heron. I had no idea how many swans live in the Thousand Islands — they were everywhere. Between the wildlife and the soft light reflecting off the water, it was the perfect way to end the day. We glided through narrow channels between tiny islands and stunning cottages, daydreaming about what it would be like to live on one.

Beaurivage Island is a public island managed by Parks Canada, and though we didn’t have time to explore on foot this time, you can dock your boat and walk the trails. There are picnic areas, camp spots, and even bathrooms — perfect for a lunch stop or a quick pitstop mid-paddle.

Dreamy Detour: Pick any small island cluster and just paddle. The whole area is full of hidden gems. Just make note of where you started so you can get home!

5. Boldt Castle – Heart Island (Alexandria Bay, NY)

A cross-border paddle that feels like stepping into a fairytale.

This was our big adventure paddle — we drove over the U.S. border (passports required!) to Alexandria Bay, launched from the Alexandria Bay Park Beach
, and paddled across the channel to Heart Island.

We paddled across the main shipping channel, which is regularly used by tanker ships and large boats. The current here can be strong, and the traffic is fast-moving — this is not a crossing to take lightly. You’ll need to be in a touring or performance kayak for this route. Smaller recreational kayaks would struggle with both the speed and stability needed to cross safely. Stay alert, keep your eyes on the horizon, and make the crossing quickly and confidently.

Once we made it across, we docked our kayaks on the west end of Heart Island, pulling them right up onto the shore to make sure they didn’t float away. From there, it’s a short walk over to the north side of the island to check in and purchase your tickets.

The castle itself has a beautiful — and heartbreaking — story. George Boldt built it for his wife, Louise, but she passed away suddenly before it was finished. Devastated, he stopped all construction and never returned. The castle sat abandoned for decades until restoration began in the late '70s. Today, it’s been brought back to life and is open for self-guided tours — and it’s absolutely stunning.

Launch Tip: Alexandria Bay Park Beach is a great starting point. Just plan ahead, check the weather, and watch for boat traffic. And don’t forget your passport!

Final Thoughts

The Thousand Islands is truly one of the most magical places to paddle in Ontario (and New York State!). Every island has a story, and there’s something so special about experiencing it all from the water. If you’re planning a trip, I highly recommend adding these five spots to your list.

📍 Save this post for later and tag us if you end up paddling any of these places — I’d love to see where your kayak takes you.

Happy paddling!