The splendor of this 17th century golden chapel has led it to be called the "eighth wonder of the world."

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

An indigenous take on European design creates a stunning visual overload.

The only castle in North America to ever house European sovereigns.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This castle-fortress is a living example of the transition from medieval defenses to modern fortifications.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Go inside to really appreciate this 500-year-old technological masterpiece.

The oldest botanical garden in the world that technically isn't the oldest.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

This massive blockhead sculpture hides an entire library.

An art museum with an eclectic design and a scandalous past.

A 125-meter long "tribute to the Brazilian people."

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

Beautiful public park off the beaten path and away from tourists.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

Museum precariously perched on a massive yellow pillar.

Solitary monument dedicated to the beauty of nature.

Unrepaired walls from a 1920 anarchist bomb attack.

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

Museum dedicated to the terror regimes of Hungary.

Once the home of a hermetic monk, this cave now houses a small church.

Budapest's Communist-era statues, banished to the suburbs.