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

This sculpture honors the man who was known as the "Righteous Among the Nations."

The metal leaves on this tree are engraved with the names of Holocaust victims.

Created as a "model concentration camp" to hide Nazi atrocities from the international community, this former camp-ghetto now holds a museum and memorial honoring the lives lost within.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

Monasteries on rock pillars, once accessible only by frayed ropes.

The hallucinogenic center of the ancient world.

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

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

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

Where commuters walk through remnants of an ancient Greek necropolis.

Scars of this building's past life as a violent prison still cover its walls.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

Preserved portions of Athens's ancient defenses are on display in a subterranean parking garage.

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

The site where hundreds of Greeks were tortured by the Nazi secret police is now a cosmetics store.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

A sprawling collection of books and manuscripts about ancient Greece that would have put their famed libraries to shame.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

A sharp sculpture made of thousands of pieces of jagged glass.

The bronze uniforms commemorate the vital role of women during World War II.

The final resting place to 300 Victorian-era pets hides inside the city park.