A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Ottoman-era houses lovingly preserved.

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A fountain standing as a testament to a doomed alliance.

A marvel of Byzantine engineering under the streets of Istanbul.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

This museum was invented in a novel before being made real by the author.

Large miniature theme park with 100-plus models.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

This snug medieval lane is one of the narrowest streets in the world.

One of the largest remaining ancient burial mounds of the 10th century.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

An Art Nouveau building covered in animal gargoyles and grotesques.

The deepest metro station in the world.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

This 1000 year old relic-filled cave monastery and UNESCO World Heritage Site also hosts an amazing micro-miniature museum.

340-foot statue built to honour the Heroes of the Soviet Union.

Last remaining nuclear missile base in Ukraine.