Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

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

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

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.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

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

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

This metallic stampede sits frozen on a Washington ridge yet the artist's vision is still incomplete.

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

An obscure waterfall that looks like something out of a fantasy novel.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

Huge stone depressions which may have acted as an Incan agricultural experiment.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.