Iserlohn

Iserlohn (German pronunciation: [iːzɐˈloːn]) is a city in the Märkischer Kreis district, in North Rhine-Westphalia, Germany. It is the largest city by population and area within the district and the Sauerland region.

Hagen-Hohenlimburg (formerly known as Limburg an der Lenne, changed to Hohenlimburg in 1903; Westphalian: Limmerg), on the Lenne river, is a borough of the city of Hagen in North Rhine-Westphalia, Germany.Hohenlimburg was formerly the chief town of the county of Limburg-Hohenlimburg in medieval Germany, first documentary mentioned 1230, and belonged to the counts of Limburg.

The Dechen Cave (German: Dechenhöhle) in Iserlohn, Germany is one of the most visited show caves in Germany. It is located in the northern part of the Sauerland at Iserlohn (Grüne district). 360 metres of the 870-metre long cave have been laid out for visitors, beginning at the spot where, in 1868, the cave was discovered by two railway workers.

Grüner Bach is a river of North Rhine-Westphalia, Germany. It flows into the Lenne near Oestrich.