Accessible only at low tide, the deserted island is dotted with World War II ruins.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

Spend the night in this formerly abandoned traditional Scottish village.

What if all public housing projects had been designed by "the Pygmalion of modern architecture," not only their prototype?

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

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

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

Climb inside an iron crystal magnified 165 billion times its normal size.

A hidden tunnel of bones in one of Malta's oldest churches.

One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.

An enormous dragon scales the walls of this 17-story temple.

Abandoned mini-mansions that were once intended for affluent Bangkok families now sit empty.

These abandoned ruins in the middle of Jaffna have withstood centuries of tumultuous power struggles.

This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

Known as the most scenic route in Sri Lanka, this train line is steeped in history and offers an unparalleled view of the country.

A Bohemian "anti-hotel" offers off-kilter stays in Sri Lanka.

This elaborate temple was built around one of the Buddha's teeth.

This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.

The site of a prison camp where Cypriot resistance fighters were held in the 1950s.

This former Cyprus flight hub is now a crumbling, abandoned ghost complex.