A 15th-century whalebone is tucked away in an unassuming corner of this medieval church.

There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.

A medieval cave used to shelter local hermits now holds nearly 200 old Quaker gravestones.

The unpredictability of this pendulum's movements has drawn visitors to this magnificent church for decades.

A 142-foot-tall Q-tip on Bristol's skyline.

This church is said to have connections to the Knights Templars.

An alchemical monument that represents "Earth, Air, Fire, and Water."

The largest and best-preserved rotunda in Prague.

The wreck of a World War II cargo ship has become an unintentional time capsule at the bottom of the Red Sea.

An archway adorned with vulnerable flora and fauna.

At the center of London’s oldest roundabout stands an obelisk that was erected in 1771, but spent several decades elsewhere.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

The first museum in the world devoted to sexual gadgetry.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

Dedicated to the man who saved hundreds of children from Nazi-occupied Czechoslovakia.

Monument to a suicide protesting the Soviet invasion.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

The only Roman honorific column in Istanbul.

The eclectic home of a leading Turkish architect is a gorgeous piece of eye candy.

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.