Ilsfeld is a municipality in the district of Heilbronn in Baden-Württemberg in Germany, on the outer edge of the Stuttgart Metropolitan Region. In addition to the village of Ilsfeld proper, it includes the formerly independent settlements of Auenstein and Schozach and some hamlets. Formerly predominantly agricultural, it has become more commercially oriented since an autobahn exit was built in the 1950s. The village of Ilsfeld was largely destroyed by a fire in 1904, and was rebuilt with public buildings in a rustic Württemberg style with Jugendstil elements.

Neckarwestheim is a municipality with 3524 inhabitants in the Heilbronn district, Baden-Württemberg, in south-west Germany. It is located on the Neckar river and is well known as the location of a nuclear power station, the Neckarwestheim Nuclear Power Plant.