Plovdiv of which are high. Because of these hills, Plovdiv is often referred to in Bulgaria as "The City of the Seven Hills". Plovdiv is host to a huge variety of cultural events such as the International Fair Plovdiv, the international theatrical festival "A stage on a crossroad", the TV festival "The golden chest", and many more novel festivals, such as Night/Plovdiv in September, Kapana Fest, and Opera Open. There are many preserved ruins such as the ancient Plovdiv Roman theatre, a Roman odeon, a Roman aqueduct, the Plovdiv Roman Stadium, the archaeological complex Eirene, and others. The oldest American educational
Plovdiv administrative structured units. According to the "Law for the territorial subdivision of the Capital municipality and the large cities," the territory of Plovdiv Municipality is subdivided into six district administrations with their mayors being appointed following approval by the Municipal Council. In 1969 the villages of Proslav and Komatevo were incorporated into the city. In 1987 the municipalities of Maritsa and Rodopi were separated from Plovdiv which remained their administrative center. In the last several years, the inhabitants from those villages had taken steps to rejoin the "urban" municipality. The city has more than 200 archaeological sites, 30 of which