An abstract monument by the famous Berlin sculptor Georg Kolbe for Emil and Walther Rathenau with an eventful history

Striking images of New Orleans history, including colonizers, soldiers, Klansmen, scientists, sharecroppers, and more, are depicted in frescoes that line the walls of this transportation hub.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The second oldest continuously operating bar in Louisiana.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

Rest stops along this pathway offer some of the best views of the Acropolis of Athens.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

These caves secretly held national treasures during World War II.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

Where commuters walk through remnants of an ancient Greek necropolis.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

Legend says this sacred tree was a gift from goddess Athena.

An ancient octagonal weather station named for the eight Greek gods of wind.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

The hallucinogenic center of the ancient world.

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

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.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

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

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