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

A well-worn marker in a forgotten alleyway is all that remains of what had been one of Manhattan's most beautiful buildings.

This colonial mansion has been home to a staggering number of American historic figures.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

The abandoned coal loading dock is a canvas for unsanctioned art.

In the early 1800s, surgery was also a show.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

A tiny, unmarked beer and whiskey bar above an Ethiopian restaurant in West Philly fails to conceal live bluegrass.

These ruins of an octagonal stone school that was later used as an A.U.M.P. church exemplify a popular school design from the 1830s.

An unusual and eclectic collection of local historical memorabilia.

Honorable ranks graduating from the prestigious Army War College work hard to maintain their high standards of honor and erase those who don't.

A piece of crumbling highway infrastructure was repurposed as a high-tech facility for testing racecars.

This giant, rotating globe was built to celebrate the expansion of a company that makes steam cleaners and pressure washers.

An enormous factory from the late 1800s sits abandoned on Cleveland eastside.

This small piece of Michigan is entirely surrounded by Ohio.

The final residence of an educator, civil rights leader, and presidential advisor was also the first headquarters of the National Council of Negro Women.

For over 70 years, this house was home to a pioneering Black artist and educator.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

The national park was once a plantation estate.

In what is rumored to be an intentional act of spite, this memorial almost completely obscures the nearby grave of a senior officer.

A gift from Scotland to the United States in memory of the 270 lives lost when Pan Am Flight 103 exploded over Lockerbie due to a terrorist bombing.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

This historic boathouse was constructed using salvaged lumber from burned barns.