Every inch of this chapel is covered in craftsmanship from across the world.

An eerie, little-known Neapolitan museum filled with preserved human remains.

This poignant art installation raises awareness of violence against women.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

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

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

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

Thousands of well-dressed mummies below a monastery.

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

A submerged archeological park still holds the wonders of a Roman Sodom.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

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

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

450 dead and frozen fish, proudly on display in Japan.

A semi-abandoned replica of Prince Edward Island's Avonlea—in Japan.

The traditional houses along the coast of this charming Japanese fishing village allow people to sleep above the sea.

A network of sandy streets lined with verdant fukugi trees weaves throughout this tiny seaside town.

One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

This Kyoto Starbucks takes coffee drinkers back in time.

A railway station takeout shop sells boxed meals in containers shaped like trains and snowmen that hold the country’s abundant regional delicacies.