No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

This former Imperial summer home was the venue for a royal slap that once echoed 'round the world.

A fountain standing as a testament to a doomed alliance.

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.

Large miniature theme park with 100-plus models.

A marvel of Byzantine engineering under the streets of Istanbul.

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

This unique Lady Liberty is one of the only examples of the figure sitting down.

Padlocks cover this rickety footbridge with love.

This unassuming museum's slogan translates to “there is a limit of sadness, anxiety has no limits."

The deepest metro station in the world.

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

When you've got to go, you've got to go.

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

The largest catacomb system in the world.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.