At an estimated 3,800 years old, this olive tree is one of the oldest on earth.

Crushed coral and crystals give the sand its signature coloration.

Windblown rock formations in an ancient Roman quarry.

This weird, elephant-shaped rock also hosts two ancient tombs.

A striped 12th-century basilica sits in the countryside of Sardinia.

Stalactites and stalagmites in a beautifully lit cave.

On the coast of Sardinia, a once-great mining village is finding new life as a coastal resort town.

This cliff-face port is considered a masterpiece of mining engineering.

An eerie gravel road full of shards of red bricks leads to the ruins of a deserted factory.

Packed with geological formations, an ancient river, and taxidermied seals, this overlooked coastal cave system is worth a spelunk.

Underground monastery and fortress.

This neon lit Georgian cave claims to hold the boulder Prometheus was chained to.

The cave holds a spectacular array of stalactites and stalagmites, including one shaped like a giant human heart.

These Stalin-era industrial 'death traps' hang lifeless above the city

Small church on top of a huge rock column.

Ancient rock-hewn town that witnessed key events of Georgian history.

Georgia's answer to Easter Island immortalizes the nation's great poets, artists, and leaders in stone glory.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

This medieval fortress is (or was till 2017) the home stadium of the football club FC Duruji Kvareli.

This extraordinary, multi-pillared monument depicts the fascinating history of Georgia.

Unusual building appears to be haphazardly built from randomly piled bricks.

This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.

Napoleon's childhood home is now open for people to explore the beginnings of France's short general.

This beautifully verdant lagoon is tucked below a massive volcano in a crater atop a black pebble beach.