Fürstenhaus Weimar, Cultural heritage monument in Weimar, Germany.

The Fürstenhaus on Platz der Demokratie is a former palace with a facade of Corinthian columns and a mansard roof. The columns visible today were added in an 1892 renovation designed by Franz Wilhelm Julius Bormann, replacing earlier sham columns. The building has a ground floor, two upper floors and an attic, with a balustraded balcony topped by urns above the columns.

The foundation stone was laid on 3 May 1770 for a building designed by Johann Gottfried Schlegel and executed by Anton Georg Hauptmann, intended for the ducal treasury. After the 1774 fire at Weimar's city palace, Duke Carl August moved in and the house took the name Fürstenhaus. From 1848 to 1918 it housed the parliament of the Grand Duchy of Saxe-Weimar-Eisenach, then until 1920 that of the Free State, and until 1933 the Thuringian Landtag and interior ministry.

The building now hosts the Franz Liszt University of Music, filling its halls with student performances and lessons every day. This musical function has become deeply woven into the identity of the place over more than 70 years.

The Fürstenhaus stands on the Platz der Demokratie, next to the Herzogin-Anna-Amalia-Bibliothek and the Rößlerisches Haus, which serves as the music school's administration building. The equestrian statue of Carl August by Adolf von Donndorf stands on the square in front. The Goethe ginkgo on the Puschkinstraße side, behind the building, is a natural monument.

Behind the building grows a Ginkgo tree planted around 1815 at Goethe's direction, now protected as a natural monument. This tree serves as a quiet reminder of how architecture and nature were connected in this historical city.