Fridericianum [SEP] architect
riches to build the world’s first public museum building, which was to stand on the recently laid out parade square in Kassel. The Fridericianum was designed by Huguenot architect Simon Louis du Ry for Landgrave Friedrich II and opened in 1779 as the world's first purpose-built public museum. An encyclopedic museum, the Fridericianum originally housed the state library of Hesse, the art collections of the Hessian landgraves, including the “Modern Statue Gallery”, as well as a medal, machinery and watch room, a print room,
the royal architect to achieve great eminence. The terms "Frederick's Forum" and "Forum Fridericianum" only appeared in specialist literature in the 19th century and were never officially used to refer to the square.
Life and works Opera House and St. Hedwig's Cathedral.
Knobelsdorff was involved in the construction of St. Hedwig's Cathedral, but it is uncertain to what extent. Frederick II presented the Catholic community with complete building plans, which were probably primarily his ideas which were then realized by Knobelsdorff. The opera house,