Make sure you go to Santorini proper and have lunch on a deck 1000 feet above sea level. I love Ephesus. At one point it was the second largest city in the Roman Empire. The library is still intact and magnificent. When the Meander River, from which the word is derived, which connects it to the Mediterranean, began to recede slowly over the course of hundreds of years, it brought the mosquitos, flies and disease which killed the city. It's a snapshot of history. You will see an incredible theater made out of stone. There is also a clothes market at the waters edge if you like shopping. Great knock offs. Much better than Canal Street.