Adelsheim is a town in northern Baden-Württemberg, about 30 km north of Heilbronn. The state-recognized resort of Adelsheim in the Neckar-O…Adelsheim is a town in northern Baden-Württemberg, about 30 km north of Heilbronn. The state-recognized resort of Adelsheim in the Neckar-Odenwald-Kreis looks back on a 1,200-year heritage. Adelsheim lies at the mouth of the river Kirnau which comes from the west, emptying into the river Seckach coming from the north. The combined stream was used in building the town fortifications. Farther downstream, the Seckach flows by Möckmühl into the Jagst, thence into the Neckar, and thence into the Rhine.