The Wilhelm-Ernst-Gymnasium is a secondary school on Herderplatz 14 in Weimar, Germany. Founded in 1712 by Duke William Ernest of Saxe-Weimar, it is the oldest school building in the city. Numerous notable figures such as Johann Gottfried Herder, Johann Heinrich Voss, Friedrich Wilhelm Riemer and Johann Karl August Musäus studied here. It is a designated historic site and is one of the few secular buildings of the pre-classical period still remaining in Weimar. It is prominently located in the urban center and is one of three sites forming the UNESCO World Heritage Site Classical Weimar, created in 1998.