Visiting dignitaries and Hollywood stars once stayed at this 1920s hotel, alongside ghosts that are said to haunt its corridors.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

A market for witches is hidden within a train station.

A Byzantine church containing the holy remnants of three saints sits atop the site of an ancient temple.

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

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

Where commuters walk through remnants of an ancient Greek necropolis.

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.

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

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

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

An islet filled with wooden houses where the open sea meets a lagoon.

This 18th-century former mosque held the first Hellenic Parliament.

The historic building has preserved human organs, unusual hexagrams, and scars from a political assassination.

Public water fountains built during the Ottoman Era still stand throughout this seaside town.

This church is dedicated to the patron saint of seafarers.

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.

A staircase made of gravestones leads up to this church built into a giant rock.

Step inside an ancient beehive tomb built for a mysterious cult hero.

This legendary city has been a tourist attraction for centuries.

Built by the Ancient Greeks, this chariot bridge is still in use today.