After visiting hours, this picturesque waterfall is essentially turned "off" to be used for hydroelectric power.

Standing proud atop a Turkish bluff, this Ottoman palace has retained its grandeur despite being abandoned for centuries.

At this rare mosque in Tbilisi, Sunni and Shia Muslims pray side by side.

A lively circle of dancers in the Georgian capital commemorates an ancient rite of spring.

Remnants of successive wars and Muslim colonialism in the 11th century.

At this ancient settlement at the foot of Mount Babadağ, honeycomb tombs are carved into a round cliff.

This Turkish cave boasts some rather bizarre associations with the King of Mount Olympus.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

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

Abandoned tunnels dug for the once-thriving sea salt industry on the coast of southern Spain.

The highest peak in mainland Spain is said to be the final resting place of a Muslim king.

Go inside to really appreciate this 500-year-old technological masterpiece.

An unusual sculpture with a meaning shrouded in mystery.

This region of the Perugia municipality has an unforgettable name.

Once the largest rope factory in Greece, this abandoned plant now stands like a ghost of industry past.

The ghost town where the villagers refuse to leave.

Brawny guys rolling around in oil is the oldest regular sporting event besides the Olympics.

An ancient Thracian city where fire rituals were practiced on the largest cult altar in Southeast Europe.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

One of the largest barracks of the Austro-Hungarian monarchy's military is now an abandoned ruin.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

The beautiful baroque library of the Hapsburg empire.