This fantastical waterfall is hidden in a cave located in a cracked cliff.

Three columns of volcanic rock shoot out of the ocean.

An encyclopedic collection of mammal penises.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

The biggest museum dedicated to insects in North America, one of the largest in the world.

This crumbling industrial fortress has attracted daredevils, filmmakers, and historians.

A swirling spectrum of stained glass dazzles visitors who enter this subway station.

A swaggering, monumental souvenir of the most extravagant party Montreal’s ever thrown.

This hidden park hosts a rogue’s gallery of eccentric architectural obelisks.

This mesmerizing kinetic sculpture blossoms endlessly in the breeze.

The vaulted ceiling is home to a scurry of “squirrelgoyles.”

One of Canada's oldest museums, the beautiful Redpath has been serving up Natural History and Ethnography since 1882.

Immortalized in bronze, this frazzled student will be glued to his screen for centuries.

Every year, the colorful murals of Montreal get a complete makeover.

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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

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

Currently housing a corporate bank branch this building at the southern tip of Manhattan was once the gateway to luxury vacationing.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

The home of the first American-born saint is one of the only curved buildings in New York.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

From lefty Jewish gathering site to hip cultural site in just 80 years.