This 19th-century clock has been restored to help withstand the harsh environment of its seaside home.

A former seaside jewel built for the everyman is now simply a neglected art deco fortress.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

This elaborate tunnel is the first structure composed of cast concrete in the United States.

A bronze plaque at an intersection in Hoboken marks the place where the game of baseball first took shape.

The longest step street in the city.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

Every dish is blessed in this basement eatery beneath a Hare Krishna temple.

What was once a vast naval cemetery is now home to nesting birds and pollinating bees.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

Walk into the 19th century without leaving Brooklyn.

This impressive mansion in Vinegar Hill has some mysterious details in its architecture.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

This small and serene place for quiet reflection on Staten Island was built in China based on the gardens of the Ming Dynasty.

Once America's longest-manned military fort, now an abandoned hulk.

The remains of a 19th century spring, and the site of an infamous unsolved murder.

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

Built in the 1920s, this co-op in the Bronx feels more like an Italian villa than a typical New York apartment building.

Manhattan and the Bronx have been playing tug-of-war over this former island neighborhood for more than a century.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

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

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.