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

This massive, ancient stone was disassembled and then put back together again.

The third version of this tall sailing ship sits, rusted and burnt, in Lake Ontario.

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

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

The oldest landmark of Toronto is a testament to shifting sands.

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.

This whimsical fountain pays tribute to Toronto's four-legged friends.

Soaring over the Niagara Whirlpool since 1916.

This colorful creation wasn't always a welcome part of Toronto's Moccasin Trail Park.

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

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

This Toronto garden collects stares and tchotchkes in equal measure.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

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

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

Underwater restaurant at the coral reefs of Eilat.

After over 100 years out of service this landmark windmill once again turns as a symbol of Jerusalem's self-sufficiency.

Built by a king and rebuilt by an emperor, this aqueduct transported water for 1,200 years to this ancient Mediterranean hub.

Hidden beneath a washing machine in a fake kibbutz, this secret bullet factory has been preserved as a museum.

The only quarter of the Old City not dedicated to a major world religion.

The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.