First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

An out-of-service tunnel and nearby remembrances recall the location of a deadly train crash in the New York City subway.

Most visits to the Almudena Cathedral in Madrid ignore the eeriest part of the building, its crypt

A historic office and commercial building located in the heart of downtown San Francisco.

The secret behind these nostalgic light fixtures: They're not as old as they may seem.

An interim housing alternative to FEMA trailers that is designed for densely populated areas during recovery and rebuilding following a natural disaster.

The Father of the Erie Canal has a magnificent grave marker that redefines the term "final resting place."

As telephones become more essential and less stylish one historic Brooklyn building remembers the days when they were a grand celebration of communication.

One of only two remaining Victorian-era greenhouses in New York.

This 19th century wooden span is one of only four retractile bridges in the United States.

This modest span in an industrial neighborhood is one of only four retractile bridges in the United States

The notorious headquarters of a corrupt political machine.

Nope, not Washington Irving's house.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

In 1986, Keith Haring was arrested for painting this anti-drug mural on a Harlem handball court.

This eclectic sculpture garden in Brooklyn, home to a bizarre collection of art, was once a run-down junkyard.

Retribution for death of infamous mob boss Franie Yale was a case of mistaken identity.

The site where Joe Gallo kept his guns, pet lion, and launched an all out mob war in 1960s Brooklyn.

This quiet, scenic spot was once a busy resort paradise

Every spring brings a colorful tribute to this wizardly actor's most famous role.

The loneliest island in New York.

A lioness and her cub stand watch from the side of a building on one of Queens' busiest streets

A strip of neglected land next to a highway now serves as a showcase for local artists

Where the four original members of the Ramones hung out and revolutionized punk rock.