Underground tunnels once home to crime are now back open to the public.

Historic site where Native American hunters once trapped and killed buffalo.

As if T-rex wasn't big enough, this Canadian monument is four times larger than the real thing.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

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

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

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Unrepaired walls from a 1920 anarchist bomb attack.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

Outsider art meets hard scrabble mountain life in this woodcarver's home/art piece.

An effigy of Vancouver's Gastown neighorhood's namesake.

Nestled near the mountains of western Canada resides this behemoth earth mover.

Bird dung painted this huge boulder which in turn inspired the name of a city.

This quirky countryside store is known for the goats that hang out and eat the grass on its roof.

This country market harbors goats on its roof.

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