ever less profitable and in 1968, the last blast furnace, in Oberscheld, ceased operations. As of November 2017, the town's name was officially extended to "Oranienstadt Dillenburg" to reference Dillenburg's special connection to the House of Orange-Nassau as its ancestral seat. Eibach Eibach's history began in "Nassau times" in the 13th century. In 1313, the village had its first documentary mention. In the Second World War, it was left unscathed. In 2004, the healing spring was renovated, and a brineworks was built. Manderbach Manderbach had its first documentary mention in 1225, making it older than the main town of Dillenburg (1254). The two former villages – nowadays parts of Dillenburg – Frohnhausen and Manderbach, had much in common in their early history. Here the two noble families von Hunsbach and von Selbach both held sway. As in Frohnhausen, there was also a great fire in Manderbach – albeit 148 years before Frohnhausen's – which, having been started by a lightning strike, burnt 38 houses down within an hour and a half on 29 April 1630. Nanzenbach The name Nanzenbach was mentioned for the first time in a document on 8 May 1325. This document mentions "die Nantzenbecher" — "the inhabitants of Nanzenbach". Population development (in each case on 31 December) 1998 - 25,053 1999 - 25,124 2000 - 25,092 2001 - 25,017 2002 - 24,923 2003 - 24,681 2004 - 24,533 Coat of arms The oldest town seals, dating from the 15th to 19th centuries, show the same composition as Dillenburg's current civic coat of arms. The arms were conferred officially in 1907 and confirmed in 1934. The lion inside the gateway is the Lion of Nassau. Culture and sightseeing Museums Wilhelmsturm (tower) with the Orange-Nassau Museum "Villa Grün" museum of economic history The "Casemates", old defensive structures. Hessisches Landgestüt (≈ Hessian State Stud Farm) with coach museum in the Orangery. "Living Museum" about the horse. Buildings Wilhelmsturm (tower) built in 1872 - 1875 The "Casemates", old defensive structures.from the 16th century The Evangelische Town Church from 1491 The Dillturm (tower) from 1597 The old rectory from 1531–1533 The Untertor (Lower Gate) from 1344 (alterations in 1594 and 1737) Manderbach Church Parks In Donsbach is a wildlife park. Hiking trails The following trails go through or begin in Dillenburg: The Rothaarsteig from Dillenburg to Brilon The Schlösserweg from Dillenburg to Düsseldorf -Benrath The Dillweg from Haiger to Wetzlar The Uplandweg