This 1967 experiment in modular architecture was designed to be a new model for urban living.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

A tunnel of hardened lava along Maui’s famous Road to Hana.

This black shoreline is made up of exploded lava particles.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

Nature took her revenge on the "Wickedest City in the World."

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

The world's second largest single-dish radio telescope, once used to contact E.T.

The world's brightest bioluminescent bay.

Tucked in the back of this amazing antique store is an important piece of medical history.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

Finally, you don't have to be a pious Swedish seaman to relax like one.

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

A collection of fanzines, recordings, and documents detailing the rise and influence of the feminist punk movement.

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

This innocent-looking townhome is actually a subway exit.

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

Try not to get slimed in Tribeca.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A terrific purveyor of natural history objects and curios.

This frequently-photographed waterfall takes only a short hike to visit.

35,000 grape hyacinths flow like water down a garden hill.