Budapest of Buda hills are environmentally protected. The city's importance in terms of traffic is very central, because all major European roads and European railway lines lead to Budapest. The Danube was and is still an important water-way and this region in the centre of the Carpathian Basin lies at the cross-roads of trade routes. Budapest is one of only two capital cities in the world which has thermal springs (the other being Reykjavík in Iceland). Some 125 springs produce of thermal water a day, with temperatures ranging up to 58 Celsius. Some of these waters have medicinal effects due to
Budapest are currently 837 different monuments, which represent the most of the European artistic style. The classical and unique Hungarian Art Nouveau buildings are prominent. A lot of libraries have unique collections in Budapest, such as the National Széchenyi Library, which keeps historical relics from the age before the printing of books. The Metropolitan Szabó Ervin Library plays an important role in the general education of the capital's population. Other libraries: The Library of the Hungarian Academy of Sciences, Eötvös University Library, the Parliamentary Library, Library of the Hungarian Central Statistical Office and the National Library of Foreign Literature. In Budapest