Urfa has the worst drivers of any city I've ever been in. I believe there is a lot to see here, but our guide kept us to a tight schedule and the only site we visited was Abraham's Pool, a tranquil center in the midst of a chaotic city.

Harran, a biblical site, has 7th century Roman ruins, but is more well known for the beehive houses which are not old at all, but are very interesting.

Adiyaman, where we stayed to visit Mt. Nemrut, has a museum (no flash allowed) containing more items rescued from the Ataturk dam area. A guard at this museum told us about...

The Pirin caves, an archeological site 5 km from Adiyaman; there are 208 Roman rock tombs here.