A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

A saintly relic hidden in a Prague church basement.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

A surreal statue honoring Prague's favorite literary son.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Macabre astrological automaton clock dating to the late 1400s.

The final resting place of the great navigator, or maybe his brother.

The world's most elegant power lines.

A complimentary beverage is offered to the bodega's resident rodents every day.

An impressive display of ships and artifacts from the ancient Mediterranean maritime trade.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

The two massive guns that defended Cartagena Bay.

The world's first electric battery-powered submarine.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Single runway interrupted by a busy road that cuts across its middle.

This beautifully historic Bahrain fortress might not be the most popular attraction around, but that might make it all the better.

This centuries-old tree tells an unusual tale of vegetation and fertility in the desert.

Museum dedicated to overthrowing the Soviets, complete with diorama of Soviets being beaten to death with shovels.

Nature's water park in the Wadi Bani Awf valley is full of pools flanked with cliffs and natural water slides.

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