Bulgaria has 3 national parks, 10 natural parks, 90 reserves, 429 reservation areas and 350 natural landmarks. The best known and most popular of these are listed below. In the European Union, Bulgaria is at second place (after Spain) by the number of the UNESCO Biosphere reserves, 16. The first nature reserve in the country was Silkosia in the Strandzha mountain, declared in 1931; followed by Parangalitsa, Rila in 1933.