Collapsing castle on the Hudson river was once the storage site of military surplus business.

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

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

New York City's only preserved family home from the 19th century.

During the holidays, a vintage subway train whisks New Yorkers back in time.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

The oldest surviving synagogue in New York City is now a soaring art space.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

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

One of only two commuter aerial tramways in the United States.

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

Notorious artist squat renovated into legal studios.

The ghostly remains of an accidental sea.

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

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

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

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

These fantastically named natural pools look like something out of a Scottish myth.

An enormous, inside-out glass globe built in 1935.