The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

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

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

You don't have to be an ambassador to dine like one.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

There must be a pun in this haystack somewhere...

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

Plot your trip through the city on the sidewalk.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

Finally, you don't have to be a pious Swedish seaman to relax like one.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

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

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

Enormous one time fiber mill now houses local artists and small businesses.

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

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

The Fox Sisters, America's leading mediums in the mid-19th century, possessed a table they claimed helped them "communicate" with the dead.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

A display of magnificent stained glass windows is the first exhibit of its kind.