One of the most important yet well-hidden museums dedicated to the history of medicine.

Jesus' footprints and the first catacombs in the world.

Architectural monsters are devouring this palace's every door and window.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Unbeknownst to most passersby, this marble statue standing outside an office building is a genuine piece of second-century Rome.

Inspired by the famous sculptures on Easter Island, this head serves as a popular meeting spot by Shibuya Station.

Inside the columbarium, thousands of colorful, high-tech Buddhas guard the ashes of the dead.

This little replica of Lady Liberty provides a bit of NYC in a Japanese city.

The legendary birthplace of the Japanese maneki-neko is dotted with hundreds of lucky beckoning cats.

The freshest fish here are the ones you catch yourself.

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

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

The original "capsule building" is a masterpiece of Metabolist architecture.

At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

A 16th-century horror show built in a lovely Italian garden.