century and featured a building with towers. This is believed to have been a canting symbol since it was a military structure (Wehr is a German word for "army"). These arms were used, without ever being officially approved, until the current arms were conferred in 1953. Economy and infrastructure Transport Despite its idyllic location in the Taunus, Wehrheim is advantageously placed for transportation. With the Friedberg interchange on Autobahn A 5 6 km away, and the Oberursel-Nord interchange on Autobahn A 661 only 8 km away it is well connected to the long-distance road network. The community has at its disposal two stops, Wehrheim and Saalburg, on the Taunusbahn railway (officially called line 15 by the RMV, or Rhein-Main-Verkehrsverbund). Established businesses Earplugs made by the firm Ohropax GmbHA are well-known product from Wehrheim, marketed under the name Ohropax. Heraeus Medical, a division of Heraeus, the manufacturer of Palacos® bone cement, is also located in Wehrheim. Educational institutions Wehrheim has one primary school, the Limes-Schule. There is also a special school, the Heinrich-Kielhorn-Schule, named after an early pioneer in special education. The Taunusheim, an orphanage established in 1943 to house war orphans, was until 1998 a home for children and youths run by the city of Frankfurt. Before that, the building housed the Waldfriede Hotel. In the last twenty years of its existence, the Taunusheim was home to up to 18 children and young people from 6 to 18 years old, looked after round the clock in two groups. In 1994, a day group also attended the home. The home was closed in 1998 for reasons of economy. The school for children with learning difficulties that was attached to the home remained until 2001, when it was moved to Frankfurt-Höchst. Moving part of the Wehrheim primary school into the now empty building is being considered as a way of alleviating the dearth of school space. Culture and sightseeing Museum Inside the former town gate, a local landmark, is the Stadtormuseum Wehrheim ("Wehrheim Town Gate Museum"), where visitors can see the Bronze-Age archaeological finds from the Urnfield culture (see History). Buildings The Wehrheim municipal area contains 13 km of the Limes Germanicus which was declared a World Heritage Site in 2005 by UNESCO. One of Wehrheim's sights, near Pfaffenwiesbach, is an old Roman Limes Fort, the Kapersburg, on top of the Limes. There is another Roman fort in the main community, the