Antalya Province— the shining gem of the Turquoise Riviera with some of the clearest waters and most beautiful coast along the Mediterranean.
Cilician Plains (Çukurova, Adana and Osmaniye Provinces)— the largest lowland of the country with some rocky hills topped by Crusader citadels.
Hatay Province— the southeastern part of the region which extends towards Syria. Annexed to Turkey in 1939, almost two decades after the Republic was found, this province still maintains its Mideast-influenced culture and great cuisine.
Lakes District (Göller Yöresi, Isparta and Burdur Provinces)— with many lakes little and big, this inland region is substantially different from coastal Mediterranean
Mersin Province— with hundreds of kilometers of coastline lying in front of pine covered mountains dotted with ancient citadels, this province is a less-traveled alternative rich in history to Antalya Province.
Western Lycia (southern half of Muğla Province)— rugged and wooded, with many coves heavily indendating towards the land, this is the "blue voyage" country with Lycian ruins here and there.
Antalya— the largest city in southern Turkey and the unquestioned capital of the Turkish Riviera.
Adana— one of the biggest cities in the country. A riverside city with some industry.
Alanya— town west of Antalya with some history to see and beaches to swim.
Antakya (also known as Antioch)— Great food and history near the Syrian border.
Fethiye— nestled on the tip of a gulf perfect for yachting, this town and its vicinity offers sports like paragliding or hiking (the Lycian Way).
Kaş— an unspoiled resort town with traditional architecture in the southwest of the region.
Marmaris— a nice town, albeit touristy, and the gateway for "Blue Voyage".
Mersin— a large city with some huge palm trees on the coastal promenade.
A great way to reduce your bottled water costs in this hot region is to use free cold water dispensers, locally called sebil (pronounced say-beel), which can usually be found on the sides of the streets and mosque courtyards in less-touristed towns and neighbourhoods in the region. They look like small, white refrigators and usually have two faucets: red one delivers warm (or mildly hot depending on the weather) water, while the blue one offers comfortably cold water. Though the water coming out of the faucets is not from a commercially-bottled jar, and likely from the city water network, it's harmless and causes no stomach upsets. A way to reduce the risk may be allowing yourself a week after arrival in the region to get accustomed to local microflora and -fauna that may be present in the water and then taking full advantage of sebils.
Aegean Region to the north/northwest has a lot in common with Mediterranean Turkey (especially the climate, landscape, and flora), but yet has unique aspects that make it a separate region.