Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

"Mock all and sundry things, but leave the saints alone."

This landmark cemetery in Boston was created more than 300 years ago.

A centuries-old church stands as a testament to Boston's "father of architecture."

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

One woman’s obsession gave birth to this lovely oddity at the Boston Public Library.

A house built from trash known as the poor man's Hearst Castle.

A Mysterious Masonic tomb in San Luis Obispo.

A "haunted" landmark on the coast of Southern California.

America's most famous piece of self-built architecture.

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

This natural sea cave hides a small wonderland of natural turquoise beauty.

Join in a Seance at the Swedenborgian Church.

The last remnants of what was once one of the world's grandest hotels can now be found in a Manhattan subway station.

This semi-hidden Manhattan restaurant is based out of a loading dock.

A crumbling hospital from the 1850s on Roosevelt Island.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A very classy 1920s-era bar right in Grand Central Station.

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

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

Hundreds of antique bank vault locks on display in New York City.

A Manhattan office building is home to the world's largest chess board.

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