This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Where the legendary wizard sleeps for eternity, according to Arthurian lore.

These fantastically named natural pools look like something out of a Scottish myth.

A series of mysterious metal artwork adorn this harbor walkway.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

This 19th-century monument served an important purpose for fishermen thanks to its built-in barometer.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

The heads of two giant mythological water horses honor Scotland's horselord past.

This dragon narrowly escaped demolition.

This larger-than-life lime green gummy bear sits in the middle of a roundabout in Spain.

A mid-14th-century tower that served as a prison for Spanish nobles.

A unique Baroque bridge preserved in Madrid's largest public park.

Built to celebrate the glory of a new queen, this forgotten monument has moved around Madrid three times, reflecting 200 years of political whims and city redevelopment.

An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

This small cemetery and its chapel are located in the middle of a traffic circle.

An outsider folly near Madrid.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

According to tradition, King Phillip II supervised construction of the seat of his empire from this seat carved into rock.

These striking ruins of a castle resemble a ship's stern.

Meant to resemble a massive tree, the building is the best example of Spanish organicist architecture in Madrid.

Not far from Madrid, a set of perfectly preserved trenches date back to the Spanish Civil War.

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

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.