Asenovgrad is a town in central southern Bulgaria, part of Plovdiv Province. Asenovgrad was founded by the Thracians as Stenímachos around 300–400 BC. In 72 BC the city was captured by the troops of the Roman Empire as part of the Roman expansion towards the Black Sea. After a long period of peace, the town was destroyed by the Goths in 251, but rebuilt later.
In 395 the Roman Empire was divided into two parts and the city fell under Byzantine control. Afterwards, the Slavic tribes flooded the region (until around 700 AD) and became the majority of the population. During this time the city was known by its Thracian name Stenímachos.