Delos Archaeological Site
Delos 'sacred' island is a UNESCO World Heritage Site and sanctuary that is visited by pilgrims, cruise ship passengers and tourists from the world over. Delos has always been considered to be one of the holiest of sanctuaries and if you look on a map you will see it is actually the 'fixed point' around which the other Cycladic islands circle.
With your personal licensed guide sharing the history, you will understand how rich and extensive this Mediterranean cosmopolitan religious-financial hub was in ancient days.
FYI: There is absolutely no shade on this white marble island covered with shining monuments. So, remember to bring your hat, dark glasses, sunscreen, water, and comfortable walking shoes.