This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Where commuters walk through remnants of an ancient Greek necropolis.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.

A rusted metal giant pays tribute to Birmingham’s industrial past.

Once one of the largest producers of pig iron in the world.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A spiritual vortex among the red rocks in Sedona.

William Faulkner kept his beloved estate wild and untamed.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The bomb-ravaged remains of of a colossal Neptune.

Five candy-colored villages on the Italian Riviera.

A lover's walk between hilltop towns, decorated with graffiti love notes.

Ancient serpentine sacrifice holder that has stood the test of time.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

A hollow cement depiction of time's inexorable effect on the human body.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

Phil Mortillaro uses keys to bring art back to the Village.

Macabre astrological automaton clock dating to the late 1400s.

Cold war icon and onetime "hole" in the iron curtain.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.