The municipality lies at an elevation of 300 m above sea level in the northeast Palatinate Forest in the valley of the Eckbach, a 39 km-long brook that empties into the Rhine.

After the Second World War, the municipality belonged at first to the Frankenthal district, which in the course of administrative reform in Rhineland-Palatinate was abolished in 1969.

In the roofed Ehrenhalle – "Hall of Honour" – a room separated from the castle courtyard by arcades, the amateur theatre group, the Altleiningen Castle Players (Burgspiele Altleiningen) has been producing challenging plays – classical, modern, often also some with historical aspects – every year in the summer months since 1980.

The latter has a gateway arch at the north entrance, and the west gables of the convent buildings and monastery church are parallel to the modern high street.

Two letters patent, one each from Pope Innocent II and Emperor Friedrich Barbarossa, underscore the monastery's importance at the time of its founding.

Recalling the Höningen Latin School (Höninger Lateinschule, 1573–1630), in which the Leininger-Gymnasium in Grünstadt has its roots, is a gatehouse at the way into the back alley.

From the 20-Pipe Well (20-Röhren-Brunnen), which is fed from an adit that was sunk deep into the cliff about 1600 to supply the castle above with water, the Eckbach nowadays draws most of its flow.