That part of southern Brandenburg described in the preceding feature includes a remarkable railway. The area is bisected by a former dedicated military railway, part of a 70-km line which was constructed between 1875 and 1897. The Königliche Militär-Eisenbahn or KME (Royal Military Railway) was a plaything of the Prussian military, but also an important proving ground for vehicle prototypes. A rail world-speed record was set on the KME in 1903.