Schloss Eichbüchl, Historical château in Katzelsdorf, Austria

Schloss Eichbüchl is a castle in Katzelsdorf, Lower Austria, rebuilt in 1906 in the Zuckerbäckerstil (confectioner's style) by a Chinese silk importer. The building is a protected monument and is often called the birthplace of the Austrian Republic.

The castle traces back to the 14th century and the Lords of Vierding, though the current structure developed after the Turkish invasions. In April 1945, Karl Renner drafted the first government proclamation of the Second Austrian Republic within these walls.

From 1964 to 1977, the castle hosted the Eichbüchl Talks, where international professors including Henry Kissinger and Paul Lazarsfeld gathered for academic discussions.

The castle is privately owned and can be viewed from the outside, with a commemorative plaque providing information at the entrance. Visitors can photograph the building and its unusual design from the street.

Between 1964 and 1977, the castle hosted the Eichbüchl Talks, where international scholars like Henry Kissinger and Paul Lazarsfeld gathered for discussion. These informal meetings were known for their open conversations on global politics and academic matters.