The “Green Castle”, to which the Grüneburgpark owes its name, no longer exists.
The Frankfurt banker Peter Heinrich von Bethmann-Metzler acquired a property in 1789, at that time just outside the city, and gave the existing property the new name. Neighbors were other patrician families in Frankfurt, including the Goethe family. Around 50 years later, the banker Amschel Mayer von Rothschild acquired what is now known as “Grüneburg Castle”. In 1844/45 a new estate was built west of the existing building, based on the French model: the «New Palace at the Green Castle». At the end of the 1870s, the property became the property of the Wilhelm Carl von Rothschilds family, who commissioned landscape architect Heinrich Siesmayer to redesign the park in the style of English landscape gardens.
Under the Nazi dictatorship, the property and the park were expropriated by the National Socialist magistrate in 1935. The Goldschmidt-Rothschild family emigrated to Switzerland in 1938, where Albert von Goldschmidt-Rothschild committed suicide in 1941. During air raids in 1944, the buildings of the “Green Castle” were almost completely destroyed, and the remains of the city of Frankfurt were finally removed in 1952. The name "Grüneburg" coined by Bethmann-Metzler remained.
A cabala wood memorial stele by sculptor Hans Steinbrenner, erected in 1968 at the former location of the New Palace, has an inscription to commemorate the history of the place. Since 2007 there has also been a commemorative plate by the artist Clemens M. Strugalla attached to a low base.