This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

A unique tribute to the millions of animals who served and died for the British military.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

An art deco ice cream shop covered in vintage tiles.

This quirky curiosity shop takes its cues from the world's bazaars.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

Pilgrimage site for star-crossed lovers.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

A science fiction-inspired apartment building designed by a famous Spanish architect.

Barcelona's only remaining tram system takes riders to the Tibidabo funicular.

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

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

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

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

This massive blockhead sculpture hides an entire library.

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

The abandoned ruins of a beautiful medieval castle just outside Barcelona.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

An architect transformed this abandoned cement factory into his castle-like workshop.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.