A single column facing the sea is all that's left of one of the most important temples of Magna Graecia.

This Roman amphitheatre was also the location of the first gladiator school.

The last resting place of the famous Native American princess is marked by a haunting monument.

Contrary to what its name suggests, you won't find any bunnies here.

A clerical error gave rise to this imaginary micronation in the southwestern corner of Estonia.

The world’s tallest outdoor lift stretches along the stone pillars that inspired the floating mountains in the movie “Avatar.”

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

Just saying the name of this town out loud is said to bring bad luck.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

The steel cable lets adventurers zoom between two mountain towns at speeds of up to 75 miles per hour.

The construction of a new church near Venosa was started in the 11th century, but never finished.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

This king penguin is a knighted brigadier of the Norwegian Army.

An enormous alien invades Woking, England, as an homage to the H.G. Wells classic 'The War of the Worlds.'

A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

The most remote tree in the world is more than 170 miles from its nearest neighbor.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

This observatory within Europe's first dark sky park offers stunning views of the night sky.

The coffin-shaped church was once home to monks who slept in coffins.

A giant roundabout made up of six smaller roundabouts can befuddle the uninitiated.

Eat a Nobel banquet from any year in the basement of Stockholm's City Hall.

An ingenious solution to a tricky engineering problem, this spiraling bridge takes drivers for a dizzying spin.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.