Tree of Knowledge (German: Baum des Wissens) is a 1981 public artwork by Lubo Kristek located in the Ignaz-Kögler-Gymnasium (high school) in Landsberg am Lech, Germany. The 16 m tall sculpture in architecture is made of wood and stainless steel. The sculpture was commissioned for the newly built extension at the school. Kristek co-operated with the architect Kergel. According to the art historian Hartfrid Neunzert, the mission of this artwork is to incite the students to assume consciously their place in education and to learn to think independently. The Steinmetz + Bildhauer magazine noted: