Earliest temple 7-8th century BC. Branchidae family priests administered the shrine (interpreting the oracular utterances of a princess seated above a sacred spring).

The Ionian tribes in the Archaic Period (600–480 BC) expanded into Didyma. In the fighting between the Greeks and Persians the temple was destroyed in 494 B.C.
The spring dried up and oracular activities ended. The Branchidae left the area.

Alexander the Great liberated the temple from the Persians in 334 B. C. and revived the shrine. Carians and Milesians appointed the priests.

2nd century AD rebuilt by Milesians (never completed).

Byzantines built barracks and converted the eastern part of the temple into a fort.

In 1493 earthquake damage left only three columns standing.

references:-
https://en.wikipedia.org/wiki/Didyma
http://www.jstor.org/stable/639826 ?seq=1#page_scan_tab_contents
http://www.perseus.tufts.edu/hopper/artifact ?name=Didyma