Ephesus, the former capital of Asia Minor, is the biggest and most impressive Greek/Roman archaeological site so far. Well preserved and well documented, it is a must when visiting Turkey.
We met there Kev and Lorraine from the UK. They were on the way back home, after covering around 120,000km around the world during the past 3 1/2 years. Congratulations and good luck! Their blog is http://takingthelongwayhome.co.uk.