Thousand Islands Travel Guide: Things to Do, Best Time to Visit & Itinerary

The Thousand Islands region is a geological masterpiece where the Canadian Shield’s granite fingers stretch across the St. Lawrence River, creating an archipelago of over 1,800 islands. It is a place where Gilded Age opulence meets rugged wilderness, offering a visual feast of rocky shoals, wind-swept pines, and castle turrets rising from the mist. Whether you are navigating the narrow channels by boat or driving the scenic parkway, the connection between land and water here is undeniable.

Known to the indigenous people as Manitouana, or the “Garden of the Great Spirit,” this area has long been a summer refuge. Today, it serves as one of Ontario’s premier playgrounds, effortlessly blending the charm of small-town Canada with the grandeur of international history. From the bustling docks of Gananoque to the quiet hiking trails of the National Park, every turn offers a new perspective on this freshwater paradise.

A Playground of History and Legends

The region’s allure goes beyond its natural beauty; it is steeped in the history of the late 19th and early 20th centuries, when wealthy industrialists from New York and Chicago built lavish summer homes here. This era, known as the Golden Age, left behind a legacy of grand architecture and nautical tradition. The river was once the highway for rum runners during prohibition and the battleground for the War of 1812, leaving sunken ships and stone forts that fascinate divers and historians alike.

Culturally, the area is a bridge between nations. The islands span the border between Canada and the United States, creating a unique international community where neighbors cross the border for dinner by boat. The local culture is deeply tied to the river, with boat building, fishing, and island stewardship forming the backbone of the community’s identity.

The Icons You’ll Want to See

Boldt Castle - Accessible via boat tours from Gananoque and Rockport, this tragic monument to love on Heart Island is a must-see. Note that because it is on US soil, a valid passport is required for landing (Boat prices approx. $30-$40 CAD, Castle admission extra).

1000 Islands Tower - Located on Hill Island, this observation deck offers the best aerial view of the region without a plane. On a clear day, you can see the bridge and the winding river for kilometers (Entry approx. $15 CAD).

Thousand Islands Parkway - A 40-kilometer scenic drive running from Gananoque to Brockville. It features a paved bike path, numerous lookouts, and access to National Park trails (Free access).

Thousand Islands National Park - One of Canada’s smallest national parks, it consists of several mainland properties and over 20 islands. Landon Bay offers the most accessible and stunning hiking trails (Parking fees may apply).

Planning Your Visit

Getting to the Thousand Islands is straightforward, as the region is bisected by Highway 401, the main artery of Southern Ontario. It is approximately a 3-hour drive from Toronto, 1.5 hours from Ottawa, and 3 hours from Montreal. A car is highly recommended for exploring the parkway and accessing trailheads, though the town of Gananoque is walkable. If you plan to spend time on the water, which you should, booking boat cruises in advance is wise during July and August.

When packing, remember that the river climate can be cooler than the mainland. Even on hot summer days, the breeze on a boat deck can be chilly, so bringing a windbreaker or layers is essential. Don’t forget your passport if you intend to visit Boldt Castle or Singer Castle, as border control is strictly enforced on the river.

The Thousand Islands offers a quintessential Canadian summer experience that feels both luxurious and grounded in nature. Whether you are watching the sunset from a riverside patio, exploring the eerie beauty of a sunken ship, or simply listening to the water lap against the granite shores, this region promises a revitalizing escape from the ordinary.