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

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

One of the last Jazz Age "Wonder Theaters" in New York City.

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

A natural gas leak provides a flickering flame beneath a waterfall.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

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

The "Seinfeld" diner.

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

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

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

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

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

A collection of birdhouses await curious motorists and avian squatters.

This 1,700-pound edible sculpture is way better than your average chocolate mousse.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

"Try not to knock anything over!"

Its unique collection details the history of the state's svelte railroads.

An unsolved murder victim's grave which may or may not contain her body.

This eclectic natural history collection holds everything from a bit of the trans-atlantic cable to Hemingway's marlin.

This tiny patch of arid sand sits in one of the greenest states in the United States.

This architectural onion has an original 1930's Jerry O'Mahony dining car at its core.

Former laboratory of radical psychiatrist Wilhelm Reich.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.