Plovdiv Regional Historical Museum Plovdiv Regional Historical Museum The Plovdiv Regional Historical Museum (, "Regionalen istoricheski muzey Plovdiv") is a historical museum in the city of Plovdiv, Bulgaria. Established in 1951, it covers the history of Plovdiv from the 15th century until today (the older history is presented in the Plovdiv Archaeological Museum). It has three departments, each occupying a separate historic building. The Regional History Museum in Plovdiv was established in 1951 as a research and cultural organization for investigation, study, preservation and display of cultural assets from the past of the city of Plovdiv and its region in the period 15th–20th century.
Plovdiv is the second or the third-largest cosmopolitan city inhabited by Bulgarians, after Sofia and possibly Varna. According to the 2001 census, out of a population of 338,224 inhabitants, the Bulgarians numbered 302,858 (90%). Stolipinovo in Plovdiv is the largest Roma neighbourhood in the Balkans, having a population of around 20,000 alone; further Roma ghettos are Hadji Hassan Mahala and Sheker Mahala. Therefore, the census number is a deflation of the number of Roma people, and they are most likely the second-largest group after the Bulgarians, most of all because the Muslim Roma in Plovdiv claim to be of Turkish ethnicity