Nestroy was an Austrian writer of popular plays, actor and opera singer, who always stood up for freedom and was thus forced to spend many hours in police custody.
Nestroy fought against censorship. The large impressive monument is the grave of the mineralogist Friedrich Mohs. The scale he invented to classify the hardness of minerals is still in use today and is especially popular among stonemasons. Opposite his tomb is the bizarre sepulchre designed by the Austrian sculptor, Alfred Hrdlicka. It is the final resting place of his first wife Barbara.