For more than half a millennia, this automaton has rung an hourly bell.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

Kissing the ass of this stone lioness has become a rite of passage in the city of Girona.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

Bacteria and algae give the salty water its bubblegum hue.

The two massive guns that defended Cartagena Bay.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

A Spanish town built into the cliffs.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

Rare karst landscape eroded from a flat seabed.

A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

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

A huge cathedral single-handedly constructed by one eccentric monk.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

The way that light hits a stained glass window on a specific day is one of many "clues" to a mysterious treasure.