In 425 – 420 B.C. the Athenians began the construction of a new temple to Apollo on Delos. The temple was entirely made of white marble and was designed by Callicrates, the architect of the Acropolis. After independance from Athens in 314 B.C., the stylobate was added and the design was changed from Ionic style capitals to Doric.
During the Period of Independence, the entire site of the Sanctuary was decorated with hundreds of marble and bronze statues from cities or wealthy individuals; unfortunately, only their inscribed pedestals remain.
Excavations of the island began in 1872 and are still ongoing. They have unearthed the Sanctuary and a good part of the Hellenistic town. Since 1990, the whole island of Delos has been designated a World Cultural Property and is protected by UNESCO. Extensive conservation and restoration work has been done in the recent years financed by the EEC and the Hellenic Republic
Dr. P. J. Hadjidakis
Strabo, Geography 10. 5. 2 (trans. Jones) (Greek geographer C1st B.C. to C1st A.D.) :
"From olden times, beginning with the times of the heroes, Delos has been revered because of its gods, for the myth is told that there Leto was delivered of her travail by the birth of Apollon and Artemis . . . The neighboring islands, called the Kyklades, made it famous, since in its honor they would send at public expense sacred envoys, sacrifices, and choruses composed of virgins, and would celebrate great general festivals there [i.e. in honour of Apollon, Artemis and Leto]."