It was established before 1800. As a garden pavilion in the neo-Gothic style. In 1815. After Count von Reden’s death, it was converted into a mausoleum. In 1818. Count’s body rested there, and in 1854. The countess was also buried there. After the ransacking of the Abbey in 1924. The then owner of Bukowiec, Friedrich von Rotenhan, had the sarcophagi of the von Reden couple moved to the cemetery located behind the Abbey. Today, the restored building has created another vantage point on the tower, which is now reached by an outdoor staircase.