[8] A memorial and a museum dedicated to the victims were set up in part of the building, which today houses a psychiatric hospital accepting patients from all over the Upper Carniola region.

During the war, the Germans held 11,477 hostages at Kacenštajn Castle; 849 inmates were killed,[9] and 5183 were deported to Nazi concentration camps such as Mauthausen.

[10] Mass graves of tortured and shot Slovenes are located in the castle park[11] and in the Draga Valley 1.6 kilometers (0.99 mi) to the east.

The graves contain the remains of at least 20 Russian Liberation Army prisoners of war and civilians that were murdered at the end of June or beginning of July 1945.

[15][16][17] The Mazevec Crevasse Mass Grave (Grobišče Mazevčev pruh) is located north of Kamen Castle, on the edge of a quarry below a large spruce tree, and is 10 m long.

It has a cupola vault, a bell tower centered with the front side of the church, and furnishings created by Leopold Layer (1752–1828) and Janez Vurnik (1849–1911).