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 Metro in a limited state, with the gates opening as one approaches. Ticket validators have been installed on a bus and at the terminus of line H6, but are not being used. Lines run from approximately 04:30 to 23:30 every day, though times vary slightly between lines. The Budapest Metro is completely electrified and standard gauge in operation. Three different types of rolling stock are currently in service: Budapest Metro The Budapest Metro () is the rapid transit system in the Hungarian capital Budapest. It is the oldest electrified underground railway system on the European continent, and the third-oldest electrically operated