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

A little sculpture with a large wardrobe.

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

Built in 1512, the oldest cathedral in the Americas.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

Semi-mystical manmade towers of rocks decorate this rocky seaside.

Once a bustling fishing village and trading post, today these Cape Verde ruins provide a home only for seabirds and turtles.

Single runway interrupted by a busy road that cuts across its middle.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

Striking occult iconography on a medieval German church.

The world's oldest rose is so tough it survived being bombed in World War II.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

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.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

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

An ancient Egyptian temple in the middle of Madrid, Spain.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

Once described as the "Eagle's Nest," this ruined ancient city rests on a remote mountaintop.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

You may get stranded and everyone's peeing in the water, but at least there's cocktails!