This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

The largest of Denmark's seven mysterious round churches stands on an island in the Baltic Sea.

Even though bison are not native to this Danish island, you might find them walking around the Almindingen Forestas as part of a nature experiment.

This clifftop arch is a natural stunner.

The Emperor Tiberius' palace of debauchery.

This crescent-shaped beach is said to glow under the light of a full moon.

These artificial caves crafted by ancient Romans were elaborate fish farms for moray eels.

Take a giant yellow bird cage to the top of Elba's highest mountain.

This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.

A former mining village that now operates as an open-air museum.

This cliff-face port is considered a masterpiece of mining engineering.

A striped 12th-century basilica sits in the countryside of Sardinia.

This mysterious Sardinian festival sees a horde of blank-faced equestrians compete for tin stars.

The titular "little arch" near this Italian resort is one of the most popular diving spots in the country.

A wild annual race in Sardinia re-enacts Constantine's victory in Rome.

Greenery covers the face of a gently-dripping waterfall deep in the mountains of central Sardinia.

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.

An eerie gravel road full of shards of red bricks leads to the ruins of a deserted factory.

At an estimated 3,800 years old, this olive tree is one of the oldest on earth.

A breathtakingly steep set of stairs is carved directly into the face of the sea cliffs of Bonifacio.

The best collection of Mudéjar building replicas gathered in a theme park in Olmedo.

Welcome to the home of the world's largest typewriter company.

One of the world's steepest streets seems to have houses sliding down it.

One of the world's largest pianos is displayed in the workshop of the man who built it as a teenager.