12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

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

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

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

One of the largest underground systems runs under Canada's largest urban center.

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

Secret Swing.

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

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

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

This Toronto garden collects stares and tchotchkes in equal measure.

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

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

The world’s largest Masonic temple was saved by the White Stripes.

Detroit’s downtown castle is one of the oldest structures in the city.

Opulent downtown movie theater now houses cars as an indoor parking garage.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district.

Concrete igloos standing across from what remains of the Michigan Central train depot.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

Enormous small-business mecca in the Midwest, serving dozens of artists.