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–Belgrade railway International, financed with Russian credit. The reconstruction of the section Novi Sad-Subotica is set to begin in 2019, with estimated cost of €943 million, built by a Chinese company and a duration of 33 months, during which this section will be closed. The railway line between Budapest and Belgrade was used also by the Orient Express until 1914. The Orient Express was launched on 5 June 1883. It connected Paris and Constantinople. Budapest–Belgrade railway The Budapest–Belgrade railway connects the capital cities of Hungary and Serbia – the Budapest Keleti railway station with the new Belgrade Centre railway station. As a