All that survives of the largest of Greek temples is its massive foundation, a lone reconstructed column, and some copies of the original statuary. A forest of columns once surrounded this temple, so many that rival Ionian cities were so impressed that they rebuilt many of their ancient temples in similar style. The Temple of Artemis, in Ephesus, is a direct imitation of the great Samian structure. The Heraion was rebuilt and greatly expanded under Polycrates, in the 6th century B.C. It was damaged during numerous invasions and finally destroyed by a series of earthquakes.