Trams in Vienna (German: Wiener Straßenbahn, in everyday's speech also Bim or Tramway) are a vital part of the public transport system in Vienna, capital city of Austria. In operation since 1865, the network reached its greatest extent during the interwar period (1918–1939). Today, it is the fifth largest tram network in the world, at about 176.9 kilometres (109.9 mi) in total length and 1,071 stations.