Sopot is a Bulgarian town situated in the fertile sub-Balkan mountain valley of Karlovo, immediately below the steep southern slopes of the Troyan Balkan Mountain. Sopot is part of Plovdiv Province and is the administrative centre of a municipality with the same name.

Karlovo is a historically important town in central Bulgaria located in a fertile valley along the river Stryama at the southern foot of the Balkan Mountains. It is administratively part of Plovdiv Province and has a population of about 19,373, the mayor being Dr. Emil Kabaivanov.