The atmospheric ruins of a historic church can be found on a hill above the city of Oviedo.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This cemetery features modernist statues as strange as its name.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

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

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Many famous English poets including Elizabeth Barrett Browning are laid to rest at this Swiss-owned cemetery in Florence.

Secret refuge and museum of the Duke of Florence.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

A dilapidated psychiatric facility on the outskirts of Milan where electroconvulsive therapy was developed and Napoleon once lived.

The Cathedral of St. Ambrose has been hiding a special parishioner within its walls.

A beautiful chapel on the hills of the Oltrepò Pavese claims to house the tomb of King Edward II of England.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

A stunning hermit's shrine on a steep rocky spur in Northern Italy.

This overgrown mountain village has been abandoned for nearly a century.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

This Renaissance palace features a unique architectural design and is now home to the Ferrara National Art Gallery.

This castle was once the home of one of the most powerful women of the Renaissance.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

Church holding the preserved body of a levitating saint.

On rare days, this abandoned castle's gatekeepers open its doors, revealing the eye-popping splendor hidden inside.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.