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

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

The most powerful waterfall in all of Europe.

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

The central mosque of this Mali town is entirely built from mud.

These homes carved into the mountains seem to defy the laws of nature.

The most important and best preserved remnant of West Africa's powerful Songhai Empire.

In France, a medieval-style home pays homage to an intrepid explorer who discovered Québec.

All that remains of the once-booming chain is a single orange-roofed restaurant.

This synagogue is the only place of worship for New Delhi’s small Jewish community.

Yup, that's a 330-foot yacht passing over the highway.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

The world's largest ship graveyard is the product of decades of corruption.

Thousands of colorful pirogues showcase ingenious craftsmanship at the largest fishermen port in Nouakchott.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

This 19th-century fountain's namesake animal isn't what you think it is.

Giant topiary dog once played a role in a terrorist bomb plot.

A living art gallery painted on a canvas of Monterey pine trees.

Long tunnels run under the ancient chariot racing circuit to the tower.

The video game-themed street art first popped up in the French city.

This record setting conveyor belt system can even be seen from space.

A 66-million-year-old rock formation stands tall over Mumbai, offering stellar city views.