This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The ruins of a town wiped out by the second-largest earthquake in recorded history.

An abandoned tuberculosis hospital moulders on into an uncertain future.

A forsaken wonder in the middle of the East Side neighborhood.

A remarkable time capsule of American manufacturing deep in Maryland coal country.

A lasting testament to the Klondike Gold Rush.

This former iron ore mine comes alive with fascinating stories of its history.

Where the English trapper who faked a First Nations identity bunked with beavers.

The picturesque remains of an abandoned silver mine slope down to Tagish Lake in the Yukon.

The "Crow Boat" of Kootenay Lake, sold for a dollar and now on display as "the world's oldest intact passenger sternwheeler."

A seven-story wooden coal tipple stands this former mine, the last of many that once covered this area.

This huge ship ran aground and has simply been left to sit there ever since.

A skeletal collection of former nautical mainstays.

One of the final concrete ships built before World War II is now a crumbling breakwater.

This abandoned orphanage-turned-asylum witnessed a terrible chapter in Québec's history.

Built after the 1991 discovery of one of the world's most complete T.rex skeletons in the nearby hills.

At least 14 twice-retired ships were sunk to make a lovely rusting breakwater in Comox Harbour.

An abandoned logging settlement nestled in the woods near a popular ski town.

A long-abandoned provincial prison left to crumble in the frigid air of Ontario.

Hundreds of enormous icebergs drift through this waterway every year.

Hunt for buried treasure in Nova Scotia.

As if T-rex wasn't big enough, this Canadian monument is four times larger than the real thing.

From mining complex to industrial exhibition, this museum once played a major part in the X-Files.

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