The secret medieval communication system will whisk your words above the noise of the crowd.

The unusually large seat sits atop the base of a ruined temple.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

Go surfing on this urban wave, "hacked" by local surfers.

An interactive exhibition space dedicated to the kinetic sculptures of Swiss artist Jean Tinguely.

The smallest museum in Basel, Switzerland, is a two-foot-by-two-foot window in the door of a 600-year-old house.

Canada's subterranean Cold War museum has doubled as a movie set.

This artistic fountain display pays homage to this area's theatrical history.

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

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

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

A massive Montreal stadium that has seen nothing but trouble since its inception.

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

This expansive bridge in the Canadian wilderness was originally just built for friends.

This Elizabethan hedge maze is one of only six in North America.

What happens when a sculptor has to find a way around a 100-year-old copyright.

This quirky piece of naval artillery has been deafening Canadians for over a century.

A pixel art killer whale is frozen mid-leap in this Vancouver square.

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

Surprisingly delicious Asian-style hot dogs.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Colorful and chaotic stacked hotel in North Holland.

A perfectly circular lake is formed by the crater of an ancient underwater volcano.