At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

This tiny river island switches sovereignty every six months as part of a rare, centuries-old agreement.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

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.'

A fascist-era rural village abandoned since the early 1980s.

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

This awesome Spanish castle is so fantastical it was actually used on Game of Thrones.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

These wooden balconies that are both decorative and functional.

An elaborately decorated house sits on an otherwise quiet street.

Super Robot anime statue guards a forgotten suburban development in Tarragona.

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

This ancient Spanish castle sits high upon a hilltop.

An isolated village literally built into the crevices and rock formations of a mountain.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

Turntable anonymously received orphans, alms, and groceries.

A beautiful but toxic fountain of mercury.

This semi-secret storybook hedge maze is also the oldest garden in the city.

A science fiction-inspired apartment building designed by a famous Spanish architect.

A fascinating insight into daily life in the Eastern Bloc.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

An explosion of natural color known as "the river that ran away from paradise."

An architect transformed this abandoned cement factory into his castle-like workshop.

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.