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

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

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

This tiny lake temple dedicated to a water goddess seems to float on the surface.

Sacred waters rescued from the wrath of a volcano.

Hindu temple of the dead home to hundreds of long-tailed macaques.

The fairy tale castle of the "fairy-tale king."

Bell tower juts out from a village buried under a lake.

Some of the smallest works of art in existence.

Extensive Orthodox icon collection in Andorra.

First point in the Struve Geodetic Arc, a 19th century undertaking to measure the Earth's size and shape.

Mysterious craters may have been home to an ancient cult.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

What was once a bustling mining installation is now a bustling hub of contemporary art.

Museum covers every step of the chocolate-making process, from cultivation to the finished product.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

A pilgrimage site where people ask Saint Dymphna to watch over those who are not of sound mind.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

A giant bug impaled on a 75-foot-tall needle.

Theme park featuring miniature replicas of European monuments.

Climb inside an iron crystal magnified 165 billion times its normal size.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Too much gossip or just missing curfew could land you in here for a couple of days.