Dietkirchen an der Lahn is a borough of Limburg an der Lahn, seat of the district of Limburg-Weilburg in the state of Hesse, Germany. The formerly independent village was incorporated into Limburg in 1971. The town is dominated by the St. Lubentius Basilica, which was the most important church building in the region in the Early Middle Ages.
Dietkirchen is situated directly on the west (left) bank of the Lahn River. Its prominent feature is the towering limestone bluff on which the St. Lubentius Basilica is built. The central city of Limburg is located in a widening of the Lahn Valley. Dietkirchen is situated at the eastern end of this widening, with the valley becoming narrow again near Runkel.
The old village is characterized by a large height differential, with housing plots situated on terraces formed by numerous retaining walls. The village itself is situated at an elevation of 120 to 170 meters. In the northern part of the borough, the landscape rises up to 180 meters, while in…