Plovdiv city is situated in the Upper Thracian Plain (Gornotrakiyska Nizina), on the both banks of the Maritsa river, and was build around seven hills. The city is located 150 km. southeast from Sofia city, 270 km. west of the city Bourgas, 140 km. nordwest from Svilengrad, 58 km. south of the city Karlovo, 19 km. nordwest of Asenovgrad, 102 km. nord of the city Smolyan, 37 km. east from Pazardzhik , 90 км. southwest from Stara Zagora. Plovdiv is the second-largest city in Bulgaria after the capital Sofia. The city is one of the most popular tourist destinations in the country and a cultural and economic center of southern Bulgaria. Plovdiv is one of the oldest cities in Europe. In the beginning the ancient settlement was situated on the natural elevation between Nebet, Taksim and Dzhambaz hills (the Three Hills). Dzhendem hill, also known as the Hill of Youth is the highest one – it was declared a protected area for its endemic plants and preserved nature. Various animal species can be found there, such as squirrels, jays, hares. A monument in honor of the Soviet Army was built on the Bunardzhik (Alyosha) hill. Sahat hill – the hill with the clock tower, has become a park, a favored place for couples and youth companies with guitars. A clock tower, dating back to the 16th century, stands on top of it. The other three hills form the Ancient Plovdiv town. All of the Plovdiv hills are well-maintained parks with paths and benches. The city is a big cultural center. There are The Plovdiv Drama Theatre, another pillar of Plovdiv's culture is the Philharmonic, the Archaeological Museum, Historical Museum, regional Ethnographic Museum. The town hosts theater, dancing and movie festivals, some of them intenational-International Folklor festival, International festival of Chamber music, International festival of Puppet Theatre, Opera festivals and many others.