Putt your way around Australia in a black light environment.

The secret medieval communication system will whisk your words above the noise of the crowd.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

A massive display of meteorites all found in the Atacama Desert.

The ruins of a pre-Columbian fortress city so secure it held off the Spanish conquistadors for over 20 years.

Built for the 1962 World Cup, this fully functioning botanical clock is still ticking.

Stenciled handprints and wall paintings dating back 10,000 years, some of the earliest forms of cave art.

This stunning mass of ice spans 121 square miles and is still growing.

The 16-foot sculpture of a hand looks out from his perch on top of an art gallery.

Inside this faux cave, visitors can learn how some of their favorite fantasy characters were created.

A coin-operated washing machine turned jukebox, complete with an outdoor dance floor.

The pile of books behind the dignified writer gave the statue a most undignified nickname.

Where Venice's gondolas go for a tune-up.

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

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

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

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

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.