Adana

Some of the towns and sights around Adana include:

Tarsus — St. Paul's Well is in a courtyard long believed to be the site of St. Paul's house. You can also visit The Cleopatra Gate, Roman road and Tarsus Museum in Tarsus

Mersin — situated 65 km west of Adana, another large city in the area, although this one is on the coast.

Incirlik — situated 10 km east of Adana, site of a NATO base with a majority U.S. presence.

Antakya — a few hours to south, with lots of history.

Kizkalesi — about 100 km to west, a castle on an islet off shore.

Comana

Karatepe — ruins of a Hittite city in the pine woods near a dam lake northeast of city.

Anavarza — ruins of a small Roman town with a ruined bath turned museum about 30min north of Yilan Castle. You can also hike up the lengthy stairway to reach a large Crusader castle atop a high rock outcropping overlooking the ruined city.

Yılan Castle
— Crusader-era castle on the top of a rocky hill surrounded by endless flat plains east of city, on the road/railway to Osmaniye. Take a minibus from Adana to Ceyhan and ask for Yılan Kale, on your way back just wait for one again.
Misis Mosaic Museum
— On the historical Silk Road, at a distance of 26 km. from Adana. 5 TL, but ın September 2012 fee-free.