The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

Try the frozen treat that inspired Arrested Development's famous banana stand.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

The castle still holds traces of the abandoned Roman fort it was built atop.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

This former stomping grounds of the most eminent astronomers of the early 20th century.

Gorgeous purple flowers drape from the world's largest blossoming plant.

Collapsed television tower finds new life as a control tower for boat races.

The remnants of a failed socialist commune can still be found just off a California highway.

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

This midcentury LA bar was the birthplace of tiki culture.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A common entry point to the Griffith Observatory trail holds its own wonders.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

This hilltop park offers magnificent views and a Frank Lloyd Wright masterpiece.

A diminutive statue that was inspired by the sculptor's own daughter.

This fountain was designed to honor the man who helped bring water to Barcelona.

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.

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

An early 20th-century bullring converted into a modern shopping center.

This colorful statue welcomes visitors to a Barcelona park.