Once the home of a hermetic monk, this cave now houses a small church.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

A patchwork of ruins from various civilizations in one of the world's oldest continually inhabited cities.

Beirut's thinnest building was the result of feuding brothers.

This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

A meow-velous tribute to a beloved street cat, made famous on the internet.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

The home-turned-museum of Barış Manço, the mustachioed Turkish Elvis for children.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

This half-forgotten fortress was constructed by the Ottoman conqueror of Constantinople.

This shuttered power plant is now Turkey's first industrial archaeology museum.

One of the largest wooden constructions in Europe was meant to be a casino, but soon became an orphanage.

The ancient latrines of the Greeks, in all their public glory.

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

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

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

A mysterious ancient cemetery with Roman sarcophagi and Lycian inscriptions.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

Large miniature theme park with 100-plus models.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

The most metal church of all time was built in record time because of an international, pious pissing contest.

A Turkish monastery tucked into a cliff wall.