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

Two adjoining collections of 19th-20th century physics apparatuses and instruments.

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

The wreckage still sits at the exact spot the plane crash-landed in 1945, carrying 1,000 pounds of explosives.

Surprisingly delicious Asian-style hot dogs.

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

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

An abandoned Victorian-era amusement park is rusting away amidst luxury houses.

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

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

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

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

The palatial McDonald's that inspired Wesley Willis.

A century-old network of freight tunnels underneath the city's historic business district.

A Museum of Holography frozen in 1974.

A relic of the Cold War in Chicago.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

A military museum and library dedicated to the citizen soldier.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

A monument to the art of slicing people open.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.