The remains of the Castle can be visited
Neuleiningen Castle

The castle ruin of Neuleiningen, a hilltop castle on the edge of the Palatinate Forest, rises on a foothill of the Haardt. It is considered one of the earliest castellan castles on German soil, combining 13th-century French architectural elements with local traditions.
History+
After an inheritance division around 1240, Neuleiningen Castle was built by Count Friedrich III of Leiningen-Dagsburg. Together with Battenberg Castle, it served to control the Eckbach Valley and remained in the possession of the Leiningen counts for over 200 years. In 1468, Elector Friedrich the Victorious of the Palatinate conquered the castle, which led to a division of ownership between the Diocese of Worms and the Counts of Leiningen-Westerburg in 1508. During the Peasants' War in 1525, the castle was opened without a fight, but suffered no major damage thanks to Countess Eva. The Thirty Years' War also largely spared it.
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This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 49.5427, 8.1399