The body of an unidentified woman, visible through a glass coffin, was discovered by accident.

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

A Byzantine-era church hidden in a wooded area below the Acropolis.

There are many Byzantine-era churches still standing in Athens, but this is the only one with a 2,500-year-old column rising through its roof.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

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

The ruined doorway is a portal to the building's turbulent and torturous past.

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

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.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

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

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

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

A terrific purveyor of natural history objects and curios.

Unique antiquarian shop specializing in globes, maps, and prints.

This tiny store is your one-stop shop for all sorts of rare and wonderful buttons.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.