This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

This lurid German fountain plots the sad course of marriage from dating to death.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

Venice's island of the dead.

Go inside to really appreciate this 500-year-old technological masterpiece.

The world's longest and deepest train tunnel.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

Pilgrimage site for star-crossed lovers.

After just one epic test blast, this literal loose cannon proved too explosive for combat.

A white oak with property rights.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

This steamer is known as "The ship that built Cleveland."

Inside the unassuming cemetery chapel is a magnificent stained glass window and mosaics.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.