Denizli is a small industrial city in the mountains of southwestern Turkey. It has a population of 275,480 (2004 census) and is the capital city of Denizli Province.
Denizli attracts many visitors to the mineral-coated hillside hot spring of Pamukkale(cotton castle), and the ancient ruined city of Hierapolis, as well as ruins of the city of Laodicea on the Lycus, the ancient metropolis of Phrygia. Also in the district of Honaz about 10 miles west of Denizli is what was, in the 1st century A.D., the town of Colossae.
In summer the weather is very hot, the winters very cold with snow on the mountains that surround the city. This is an earthquake zone.