A small pack of an ancient, hairless breed of dog once believed to guide souls through the underworld lives on its grounds.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

One man's lifetime collection of tiny objects of wisdom gathered from around the world, on display for public enjoyment.

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

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

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

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

A lush indoor jungle fills this bustling Madrid transportation hub.

One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Iceland's tribute to its thankless civil servants.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

An isolated, rusty phone booth commemorates Iceland's first international telegraph cable.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

A whimsical bridge adorned with decorative dragons.

This one-time health resort was used by aristocrats around the world.

On a small Slovenian island, diners can mix and match a classic cake into dozens of sweet and savory flavor combinations.

The World's First 24 Hour Coin-Operated Art Gallery!! Plastic, Styrofoam, and Elvis--If you can't get rid of it, you might as well worship it!!

Contractors in this Oregon town have been stamping their names in sidewalks since 1908.