The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

A library where thousands of books explain how to avoid another Great Recession.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

This historic castle was already in ruins by the 13th century.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

A hill carving of the legendary dragon that terrorized the village of Bures in the Middle Ages.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Crushed coral and crystals give the sand its signature coloration.

Geothermal waterfalls in Tuscany.

This abandoned Slovenian military barracks has become a punky-political art squat.

A private selection of curiosities, carefully curated by a young Brighton local.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

This cemetery features modernist statues as strange as its name.

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

This medieval church tower has maintained its clockworks since the 16th century.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

This home on a quiet suburban street is completely covered with vibrant mosaics.