Every fall this lake mysteriously drains, like a bathtub with the plug pulled out.

The large fjord lake is thought to be the home of "Ogopogo," a giant sea serpent.

Canada's oldest railway tunnel is illuminated in a rainbow of color as it passes under the streets of this small city.

One of Mother Nature’s geological gems, home to many prehistoric fossils.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

It's 2 billion years old!

A lake in the middle of the tundra of Quebec is said to be the purest freshwater lake on Earth.

Iconic rock formations that allow for exploration during high or low tide.

Earth's greatest purely vertical drop at 4,101 feet.

This three-chambered cave is the only protected natural bat hibernaculum in Quebec.

One of the largest cat sanctuaries in North America is considered a "Club Med" for felines.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

A renegade art installation in a small Vancouver park is now officially sanctioned by the City Parks Department.

Canada's subterranean Cold War museum has doubled as a movie set.

What was to be the world's most secure Cold War document vault ended up as just a few shallow caves.

Cliffs that hold fossils, including the earliest known reptile, dating back more than 300 million years.

Few other hotels can rival the grandeur of the Castle in the Rockies.

Fossils, railroads, and waterfalls!

The remains of a Canadian train crash are now mouldering beneath layers of rust and graffiti.

This Toronto garden collects stares and tchotchkes in equal measure.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

An ancient Viking village in North America that predates Columbus by 500 years.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.