Where the Westerwald forest ends at the Lahn valley and almost in the immediate vicinity of Bad Ems is Fachbach, as varied as the low mountain and river landscape surrounding the town. No hiker on the Lahnwanderweg, cyclist on the Lahntal cycle path or canoeist on the river will not pass Fachbach. One of the most impressive industrial monuments of the state of Rhineland-Palatinate is located on the island of Oberau, which belongs to Fachbach. The Nieverner Hütte, an ironworks founded in 1671, gained its greatest importance in the second half of the 19th century, when the ironworks ceased operations and the production of cast iron goods became the main focus. Incidentally, the place got its name from the Old High German "Fah", a dam for fishing in streams. Even today you can still fish for trout in the Fachbach.