There is as much to see at Delos as at Olympia and Delphi, and there is absolutely no shade on this blindlingly white marble island covered with marble monuments. Just 3km (2 miles) from Mykonos, little Delos was considered by the ancient Greeks to be one of the holiest of sanctuaries, the fixed point around which the other Cycladic islands circled. It was Poseidon who anchored Delos to make a sanctuary for Leto, impregnated (like so many other maidens) by Zeus and pursued (like so many of those other maidens) by Zeus's aggrieved wife, Hera. Here, on Delos, Leto gave birth to Apollo and his sister, Artemis; thereafter, Delos was sacred to both gods, although Apollo's sanctuary was the more important. For much of antiquity, people were not allowed to die or give birth here, but were bundled off to the nearby islet of Rinia.
Delos was not exclusively a religious sanctuary: For much of its history, the island was a thriving commercial port, especially under the Romans in the 3rd and 2nd centuries B.C. As many as 10,000 slaves a day were sold here on some days; the island's prosperity went into a steep decline after Mithridates of Pontus, an Asia Minor monarch at war with Rome, attacked Delos in 88 B.C., slaughtered its 20,000 inhabitants, and sailed home with as much booty as he could carry in his fleet of ships.
The easiest way to get to Delos is by caique from Mykonos; in summer, there are sometimes excursion boats here from Tinos and Paros. Try not to have a late night before you come here, and catch the first boat of the day (usually around 8:30am). As the day goes on, the heat and crowds here can be overwhelming. On summer afternoons, when cruise ships disgorge their passengers, Delos can make the Acropolis look shady and deserted. Sturdy shoes are a good idea here; a hat, water, munchies, and sunscreen are a necessity Tip: Bring water and a snack; the snack bar on Delos, minimal at best, is often closed. Toilet facilities are limited here.