This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Medicinal spa created with the discharge from a geothermal energy plant.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

The site of the deadly Triangle Shirtwaist Factory Fire.

The most confusing clock in New York.

A notorious punk house turned co-op.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

Walk into the 19th century without leaving Brooklyn.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

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

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

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

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

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

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

Mysterious 500-year-old tapestries depict a unicorn hunt.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

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