Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The solitary cairn marks a mysterious death that's still controversial more than two decades later.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

The location of this historic castle was inspired by a donkey.

A pair of connected skyscrapers form this symbolic gateway.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A hidden barn-sized rendition of Grant Wood's most famous, and most parodied, painting.

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

2,000 barrels of aging beer hidden in a warehouse at the Brooklyn Navy Yard.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

A toxic ghost town sitting atop a massive coal fire.

Where Cusack's record store from the film "High Fidelity" was located.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

Internationally known record store and purveyor of "dusties."

An antiquated German apothecary on Chicago's North Side.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.