Marienfelde () is a locality in southwest Berlin, Germany, part of the Tempelhof-Schöneberg borough. The former village, incorporated according to the Greater Berlin Act of 1920, today is a mixed industrial and residential area. Geography The Marienfelde quarter borders the Tempelhof-Schöneberg localities of Mariendorf in the northeast and Lichtenrade in the southeast. In the west, it borders on Lankwitz, part of the Steglitz-Zehlendorf borough. In the south, it is bounded by the Berlin city limits and the border with the state of Brandenburg. History The medieval Angerdorf arose together with neighbouring Mariendorf during the German Ostkolonisation migration about 1220 AD, then affiliated with the Teltow estates held by the Knights Templar commandry at Tempelhof. A fieldstone church was erected around 1240 which, still preserved, is one of the oldest in the Berlin area. The settlement of Merghenvelde itself was first mentioned in a 1344 deed, after the Brandenburg lands of the Knights Templar had passed to the Order of Saint John. From 1435 onwards, the estates were held by the City of Berlin. Located in the southwestern suburbs of the Prussian capital, population increased from the mid-19th century on. In 1913 the Marienfelde Studios were constructed, and were later taken over by Terra Film. The historic village centre was largely destroyed during the bombing of Berlin in World War II. Transportation and industry Transportation and industry have played an important role in the development of Marienfelde: Since 1875 the Dresden Railway, a main North-South line entering Berlin, passes through Marienfelde. It is currently served by the Berlin S-Bahn commuter rail network at the Marienfelde, Buckower Chaussee and Schichauweg railway stations. The re-development as a long-distance track is planned. The parallel Royal Prussian Military Railway (Königlich Preußische Militäreisenbahn) passed through the Marienfelde area on its way from Berlin to the town of Zossen. Between 1901 and 1904, the track was electrified and used as test track for high-speed locomotive testing. Ten kilovolt, three-phase alternating current with a frequency of 50 hertz was transmitted over three overhead wires, strung one above the other. Experimental electrical locomotives reached speeds of up to on the track. Near the end of World War II, as part of the Elbe-Project, the world's first high-voltage direct current transmission lines were built from a power plant in Dessau, on the Elbe river, to Marienfelde. A substation was located in Marienfelde converted the direct current into alternating current. However,