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.

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

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

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

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

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

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

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.

This one has sailed five times as far as Sir Francis Drake's famous ship.

An artistic tribute to the famous singer, just around the corner from where he was born.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

Brussels' favorite peeing boy has a sister.

Theme park featuring miniature replicas of European monuments.

A little sculpture with a large wardrobe.

Cozy basement bar sports an inventory of over 2,000 beers.

Meet the bronze beloved pet to a family of famous peeing statues.

An old department store turned Nazi prison turned artist commune.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.