A preserved portion of an ancient Athens barrier is displayed in a hotel basement.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

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

Gladiators once walked this ancient, subterranean passage.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

A marvel of Byzantine engineering under the streets of Istanbul.

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

This striking sculpture of Icarus honors Greece's fallen flyers.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

This Greek Orthodox church houses the mummified body of St. Spyridon.

The only museum with its curator—and her pets—buried inside.