Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

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

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

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

A castle built for love, and abandoned due to heartbreak.

This tiny little island has, as the name says, just enough room for its single house.

Willy Wonka would love this weird half-a-home.

A Canadian POW for German soldiers during WWII where prisoners hatched an elaborate escape plan.

These strikingly barren, rolling red hills were caused by bad farming practices.

A memorial to the tens of thousands of Irish who fled to North America during the Great Famine.

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

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

One of the foremost Sherlock Holmes collections is hidden away at a Toronto library.

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Sweden's "good old days" painstakingly re-created in a model village.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

This massive underground salt mine now holds a sci-fi theme park in its depths.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

A 18th century graveyard and its astonishing cortege of macabre iconography.

A museum marks and documents the site of the Titanic's launch.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.