A vast city of the dead, where the deceased outnumber the living by more than a million.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

The trials and tribulations of marking Poe's grave.

Despite a history of destruction, this former citadel survives to document Afghanistan's oft overlooked history.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

The first statue of Christ sleeping on a bench in the United States confused its affluent parish.

Buried beneath the New Mexico sands are believed to be millions of copies of Atari's E.T. video game.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

This collection honors the iconic, and proudly American lighter that just won't quit.

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

The middle finger of modernity.

This abandoned lighthouse looks like a rusting oil rig, but has managed to survive a number of storms.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

This abandoned sea fort has become an accidental bird sanctuary.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

There is an unmarked red button hidden over Houston's Buffalo Bayou that is just begging to pushed...

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

The only remaining piece of hull of the most decorated US ship of WWII is this giant name plate.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.

Coca Cola may be "the real thing" but its inventor, buried at this Georgia gravesite, called it a "valuable brain tonic."

This North Carolina grave is the final resting place of the world's most famous conjoined twins.