A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

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

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

A stately palace has been converted into the world's largest cannabis museum.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

Mountain where Jesus was first tempted by the Devil.

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

This cemetery features modernist statues as strange as its name.

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.

Commonly referred to as the most photographed Victorian home in the United States.

Every New Year's Day, locals don gaudy costumes and dive into the frigid Firth of Forth.

An abandoned, desolate train tunnel that was used during World War II.

A shrine to a skeleton saint in the city of angels.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

The unbelievably opulent home built for an infamous newspaperman.

The colorful stairs are made with marble from the world's major quarries.

This vintage gem is one of the oldest surviving purpose-built movie palaces in Scotland.

A carved bench marks the Scottish cave that inspired the classic adventure novel "Treasure Island."

A poignant memorial shows the widows and children left heartbroken by the worst fishing disaster in Scottish history.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.