The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An artsy hidden staircase leads to breathtaking views of San Francisco.

One of the largest Marian shrines on the West Coast stands rather unexpectedly in Silicon Valley.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

A 16th-century Andalusian palace.

The final resting place of the great navigator, or maybe his brother.

The world's largest wooden structure.

Mountain where Jesus was first tempted by the Devil.

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

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

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

An enigmatic mural hiding in plain sight in one of São Paulo's busiest metro stations.

This singular art museum in São Paulo is unique inside and out.

A jungle in the heart of São Paulo reminds visitors of what Brazil looked like untouched by man.

Striking ruins of a mansion that stood center stage in one of modern Brazil's most puzzling crimes.

A snake farm famous for its venemous varieties.

A huge boat-shaped hotel with a blood red pool and other oddities.

The crypts are so large they're basically their own underground church.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.