The unbelievably opulent home built for an infamous newspaperman.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Rare and gorgeous birds abound in this protected wildlife sanctuary.

A former gold rush boomtown has managed to stay in business for over 100 ramshackle years.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.

Boise State's stadium was the first non-green football field in the world.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

Sacred Indian temple that’s all monkey business.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

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

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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.