The Temple of Hephaestus, located at the north-west side of the Agora of Athens, is the best-preserved ancient Greek temple. Hephaestus was the patron god of metal working and craftsmanship. National Flag Coat of Arms Formal Name : Hellenic Republic Independence : January 1, 1822 Capital : Athens Area : 131,990 km2 Population : 11,305,118 Currency : Euro Languages : Greek National Anthem : "Hymn to Liberty"