The ancient city of Anazarbus (Anavarza), included in the UNESCO World Heritage Tentative List, became the capital of Cilicia in 408.
It is an open-air museum, showcasing a superb triumphal arch, fortress, columns and two mosaic-paved pools.
Visitors can also see the historical structures at the city centre that shed further light on history.
The 310m-long Taşköprü (Stone Bridge) built by Hadrian and repaired by Justinian spans the Seyhan River which bisects the town; only 14 of the bridge's original 21 arches still stand.
As the largest mosque in Turkey, Sabancı Mosque's classical appearance belies its recent construction; it is an indispensable image of Adana that is featured on innumerable postcards.
In the north of the city, at the Seyhan Dam and Lake, are shady walks, quaint tea gardens and restaurants set in cool spots where you can escape the heat.
At sunset, look back toward the city to the peaceful, winding ruby river lined with twinkling lights.