The oldest landmark of Toronto is a testament to shifting sands.

This inexpensive lodging house was once a prison notorious for its inhumane practices.

What was once the largest mine in North America has left behind a hollow hill filled with bright blue waters.

The remains of a paranoid inventor's hidden workshop lie in beautiful ruins amidst a Canadian park.

A hiking area billed as a possible home to Bigfoot.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Rusty red sands line the shores of this Canadian Province.

An abandoned town centered around a paper mill powered by a large waterfall.

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

This natural sea cave hides a small wonderland of natural turquoise beauty.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

A school teacher's massive and terrifying self-built castle.

A neutrino detector built into the largest man-made underground cavity in the world.

This notorious Canadian mental institution was home to some of the first LSD experiments and origin of the word "psychedelic."

Legend says that this short Canadian tunnel still holds the dying screams of a girl who burned alive.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This Art Deco masterpiece has stood in for some of the most famous buildings in comic book history.

Lost subway station nestled beneath Toronto's busy commuter line.

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.

This chilly Canadian hotel has a four-month lifespan due to the unusual material it's made of.

This expansive bridge in the Canadian wilderness was originally just built for friends.