The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

Avoid gangster interaction while window-shopping.

Step inside Lucy, the world's largest "elephant."

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

Visitors to this Belgium graveyard are greeted by the grieving stone parents of the young men lost to war.

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

Commemorating the spot where the famous scientist fed his pigeons.

New York's oldest magic store.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

The life of one of FDR's possible mistresses is preserved in her palatial Hudson Valley mansion.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

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

Currently housing a corporate bank branch this building at the southern tip of Manhattan was once the gateway to luxury vacationing.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

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

While it now takes more than a dime to open an account this historic Brooklyn bank still displays the opulence of the gilded age in which it was built.

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

Introducing the Green Fairy to her fawning masses.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

This sprawling Belgian fort was once thought of as impenetrable but now it is simply an abandoned relic.