Built on the foundations of an ancient Roman villa, the unique architecture of this castle on the Catalan coast was used as a set for 'Game of Thrones.'

Touching the iron railings of Tarragona's balcony to the Mediterranean is said to bring good luck.

This amazing piece of modern art honors the hundreds of fishermen killed during Cambrils' "year of misfortunes."

The bell that resides above this small chapel is actually a converted bomb.

Long tunnels run under the ancient chariot racing circuit to the tower.

A botanical garden full of thought-provoking contemporary sculptures.

A French museum of wrought iron.

The tomb of a hard traveling saint is constantly covered in shoes as offerings to heal disabled youth.

To the famous surrealist artist, liberty required two torches held high.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

This Croatian computer club features such gaming relics as the infamous Virtual Boy and an 8-bit Pacman machine.

This military tunnel dates back to World War II and provides visitors with a little wartime adrenaline.

A musical instrument played by the sea.

The remains of a sunken military ship wreck visible through clear water.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Two bulls enter. One leaves a champion—but neither loses its life.

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

This abandoned airplane hanger is said to have once been a top secret launch facility.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

An apparition of Virgin Mary in Herzegovina.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

The oldest arboretum on the Dalmatian coast doubles as the gardens of Kings Landing in "Game of Thrones."