These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

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

This semi-secret storybook hedge maze is also the oldest garden in the city.

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

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

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

An enormous pair of straw sandals woven in the traditional way—to keep demons at bay.

Rows of stone statues are dressed up to mourn children that are lost before birth.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

Once a black market electronics marketplace, now an otaku shopper's paradise.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

Not quite the menace it once was, this monster still has some chops.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

A magical place that lets you play in and explore the world of Studio Ghibli.

Ancient ruins hidden underneath a modern luxury hotel.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

This museum is rotten with a century of wax medical deformities.

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Pilgrimage site for star-crossed lovers.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

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

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.