The portrait of a man from Japan who sent weekly letters to a Dutch hotel he never visited.

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

This Hindu temple is an architectural marvel designed and built according to ancient Indian principles.

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

This unusual structure may be on its way to becoming a cultural landmark in Toronto.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

Smallest house in Toronto sits on a lot meant to be just wide enough for cars to drive through.

This Toronto garden collects stares and tchotchkes in equal measure.

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

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

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

Astonishing collection of helmets, scientific instruments, and medical models.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

This abandoned ironworks was once the most important military supplier in America.

Reforestation in action is the main attraction in this abandoned quarry.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

A living antique aviation museum in the historic town of Red Hook, New York.

For over 80 years, Mayan ruins stood proudly in a most unlikely location.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

The life of one of FDR's possible mistresses is preserved in her palatial Hudson Valley mansion.

An abandoned dollhouse factory.

A peaceful international sculpture garden in upstate New York.

Now the final resting place of prominent artists and musicians, it was originally founded to separate the rich from the poor in death.