During the construction of the metropolitan railway of Athens (1993-2000) an extended part of the ancient city of Athens came to light. This was the biggest excavation ever conducted in Greece revealing more than 50,000 articles. It brought to light ruins, which date from prehistoric to modern times and include tombs, bath houses, private and public buildings, part of the ancient aqueduct of the city and also part of the canalized Eridanos river. Sections of this excavation as well as some of the movable findings are now exhibited in six of the metro stations which have been designed as archaeological museums. At the same time the ancient ruins meet modern art, since the works of contemporary Greek artists are exhibited in all metro stations.