available to users in 12 of the 14 districts of Heidelberg offering a total of more than 100 cars. Since 14 December 2003, Heidelberg has been connected to the network of the Rhine-Neckar S-Bahn, which opens up the entire Rhine-Neckar region, with lines connecting with the Palatinate, the Saarland and southern Hesse. The Heidelberger Bergbahn (Heidelberg Mountain Railway) has run since 2005 with new cars on the lower part from Kornmarkt to Molkenkur and historic cars built in 1907 on the upper section of the funicular from Molkenkur to Königstuhl. It is one of the most popular means to reach Heidelberg Castle. The first plans for the funicular were drawn up in 1873. Due to a lack of funds, the first section of the funicular was not opened until 1890. In 2004, the upper section of the funicular was listed as part of the heritage of the state of Baden-Württemberg. United States military installations During World War II, Heidelberg was one of the few major cities in Germany not significantly damaged by Allied bombing. Situated in the American Zone of Germany, Heidelberg became the headquarters of the American forces in Europe. The main military facilities were Campbell Barracks, the former Wehrmacht Grossdeutschland-Kaserne, which housed the US Army, Europe (USAREUR) and NATO's Component Command-Land Headquarters. (Until 2004, this was designated Joint Headquarters Centre, and before that, LANDCENT). Campbell Barracks and Mark Twain Village were both in Südstadt; Patton Barracks was in nearby Kirchheim. Nachrichten Kaserne in Rohrbach was home to the former Heidelberg Army Hospital, later designated the Heidelberg Health Center. Patrick Henry Village, the largest U.S. military housing area in the Heidelberg area, was west of Kirchheim. These installations, including Tompkins Barracks and Kilbourne Kaserne in nearby Schwetzingen, plus the Germersheim Depot, made up the U.S. Army Garrison Heidelberg. Tompkins Barracks was home to U.S. Army Installation Management Command Europe Region. The Heidelberg U.S. Army Air Field (Heidelberg AAF) was converted to an heliport (mostly Blackhawk Helicopters) after the NATO Kosovo campaign. The children of United States Department of Defense employees based in Heidelberg attended on-base schools operated by the DODDS-E (Department of Defense Dependents Schools – Europe). There were three schools of this kind: Heidelberg High School in Mark Twain Village (Mark Twain Elementary School closed at the completion of the 2010–2011 school year), and Heidelberg Middle School and Patrick Henry Elementary in Patrick Henry Village. On October 19,