Dillenburg, officially Oranienstadt Dillenburg, is a town in Hesse's Gießen region in Germany. The town was formerly the seat of the old Dillkreis district, which is now part of the Lahn-Dill-Kreis. The town lies on the German-Dutch holiday road called the Orange Route, joining towns, cities and regions associated with the House of Orange-Nassau, as well as on the German Timber-Frame Road and the Rothaarsteig hiking trail. Dillenburg lies on the eastern edge of the Westerwald range in the narrow valley of the river Dill, which flows from Hesse-Westphalia border to Wetzlar, emptying into the Lahn. Dillenburg borders in the north on the community of Eschenburg, in the east on the community of Siegbach, in the south on the town of Herborn, and the community of Breitscheid, and in the west on the town of Haiger (all in the Lahn-Dill-Kreis). Dillenburg is divided into the centres of Donsbach, Eibach, Frohnhausen, Manderbach, Nanzenbach, Niederscheld and Oberscheld. Donsbach lies approximately 4 km southwest of the Dillenburg main town. Eibach has some 1,450 inhabitants. The village, whose livelihood was once based on mining, lies among the other constituent communities of Nanzenbach, Oberscheld and Niederscheld. Its healing spring, whose water is heavy with iron, makes the village a favourite among locals. At Eastertime, it is decorated. With roughly 3,900 inhabitants, Frohnhausen is the largest of the constituent communities after the main town of Dillenburg. Manderbach lies on a sunny plateau 3 km north of the main town of Dillenburg. Nanzenbach lies approximately 6 km north of the main town of Dillenburg. The tallest mountain of Dillenburg, the Eschenburg at an elevation of 589 m, is part of the Nanzenbach area. Niederscheld is a village with about 3000 inhabitants, lying 2 km from the main town of Dillenburg. The name comes from a small brook called the Schelde that rises between Oberscheld and Tringenstein and flows into the Dill at Niederscheld. The village's greatest hallmarks are the old blast furnace and the Adolfshütte industrial park.