Tourism in Bulgaria is a significant contributor to the country's economy. Situated at the crossroads of the East and West, Bulgaria has been home to many civilizations: Thracians, Greeks, Romans, Eastern Romans or Byzantines, Slavs, Bulgars, and Ottomans. The country is rich in tourist sights and historical artifacts, scattered through a relatively small and easily accessible territory. Bulgaria is internationally known for its seaside and winter resorts. Bulgaria attracted nearly 12 million foreign tourists in 2017, according to the World Bank. Tourists from five countries (Romania, Turkey, Greece, Germany and Russia) account for approximately 50% of all visitors. The sector contributed to 15% of GDP and supported 150,000 workplaces in 2014. Tourist attractions UNESCO World Heritage Sites and Intangible Cultural Heritage List There are ten UNESCO World Heritage Sites in Bulgaria. The first four properties were inscribed in the World Heritage List in 1979, and the last in 2017. Bulgaria currently has sixteen additional properties on the Tentative List. Nestinarstvo, a ritual fire-dance of Thracian origin, is included in the list of UNESCO Intangible Cultural Heritage. Ethnic, cultural and historical tourism The Bulgarian cultural heritage has many faces and manifestations - archaeological reserves and monuments, museums, galleries, rich cultural calendar, preserved folklore and magnificent architectural monuments. Historical monuments and sites Museums Thracian treasures Thracians made beautifully ornate golden and silver objects such as various kinds of vessels, rhytons, facial masks, pectorals, jewelry, weapons, etc. They used to bury rich hoards of precious objects both to hide them in times of enemy invasions and unrest as well as for ritual purposes. To date, more than 80 Thracian treasures have been excavated in Bulgaria which was the cradle of the Thracian civilization. Rural tourism The Bulgarian town house is an embodiment of the owner's social status, craft and traditions. Many old buildings that demonstrate this type of architecture—e.g. in the villages of Arbanasi, Leshten, Kovachevitsa, Melnik—have been preserved to the present day. City tourism Monasteries During the 13th and especially during the 14th centuries the construction of monasteries thrived. Due to the troubled times many monasteries resembled fortresses. They usually had rectangular shape, the buildings surrounded a yard in which the main church was located. From the outside they had high stone walls reinforced with counterforts, and from the inside there were galleries with several stores which led towards the dwellings of the monks. Churches Festivals and events Resorts and nature tourism