The Budapest Zoo& Botanical Garden is the oldest zoo in Hungary and one of the oldest in the world. It has 1,072 animal species and is located within the City Park of Budapest, in the centre of the city, unusually for a zoo. The zoo opened its doors on 9 August 1866. The park has 1–1.1 million visitors every year. The area is a nature reserve, and has some valuable Art Nouveau buildings designed by Kornél Neuschloss and Károly Kós.