The most important archaeological site within reach of Mykonos, and arguably one of the most significant in Greece. Delos is a tiny, uninhabited island just two kilometres offshore — according to Greek myth, the birthplace of Apollo and Artemis. For centuries it was the religious and commercial centre of the Aegean, home to temples, warehouses, a large civilian population, and one of antiquity's busiest slave markets.
The ruins cover most of the island: Greek and Roman temples, an Egyptian temple of Isis, the famous Terrace of the Lions (a row of archaic marble lions facing the Sacred Lake), and the residential quarter with mosaics still visible in the floors of wealthy merchants' houses. The site museum brings together finds from the excavations.
Boats leave from Mykonos harbour every morning during the tourist season (check the schedule at the harbour). The crossing takes about 30 minutes. Allow at least three hours on the island; five is better. There is no shade on Delos — bring water, sunscreen, and a hat. The site is closed on Mondays.