This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Once a ferry dock, radio transmitter, and now a new Greenpoint park.

How a century-old glass factory in Queens became a concert venue and arts center.

A once-booming railroad left abandoned next to the Quinnipiac River marshes now intersects with a hiking trail.

This Connecticut video store has a vast and varied archive that contains everything from 'Koyaanisqatsi' to 'The King's Speech.'

This secluded ruin was once a home for exotic plants.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

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

This beautiful Brooklyn monument over a crypt memorializes a grim and largely unknown story from the American Revolution.

Journey inside the bowels of this sperm whale sculpture.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

This eclectic homestead is home to a miniature windmill and Connecticut's last tollbooth.

The cave where two British judges hid in exile after sentencing the king to death.

This lovely hilltop tower was specifically built to withstand 100 MPH winds.

After decades of neglect, a brutalist icon is getting new life as an eco-friendly hotel.

Amazing views of Long Island Sound can be seen from this mountaintop tower.

One of the oldest carousels in the United States is still running in the coastal village of Watch Hill.

A lone tower rises above the cliffs in a city park, offering fantastic views of the Connecticut landscape.

This tribute to the founding father of the American dictionary originally contained a spelling error.

An overgrown and abandoned tuberculosis ward resides in the midst of a quaint modern neighborhood.

British troops and Prohibition couldn’t stop this spot from becoming one of the United States' oldest continuously-run taverns.