The Hall of the Old University, Heidelberg is the central hall of the Old University. It was originally built as an assembly hall and lecture theatre, in the baroque style and decorated with a stucco ceiling. Hierarchically arranged seating for individuals and groups was traditional in university halls and so the front part of the hall, with its characteristic rounded rows of seating and a podium in the centre was reserved for the representatives of the four faculties of the university and the inner Senate. On the five hundredth jubilee of the University in 1886, the hall was redecorated in the Renaissance Revival style, following a plan by . A gallery in the entrance area and along both sides of the room was installed, which divides the space into two levels.
Rear wall . The rear wall of the hall, behind the speaker's platform, is built on a strictly symmetrical plan in the form of a triumphal arch. It is the focal point of the hall's design. In the centre of the arch is the painting
Founding of the University of Heidelberg by the painter
Ferdinand Keller (1842-1922). The painting depicts the foundation and history of the University allegorically.
Pallas Athena, the ancient Greek goddess of wisdom and the arts is shown driving a chariot through Heidelberg, led by the victory goddess
Nike. Behind her, selected individuals from the history of Heidelberg University and intellectual history between the 14th century and the 19th century are depicted. Part of
Heidelberg Castle is visible at the top right. In the centre, a personifications of the
Neckar River sits on a throne, with a personification of the city of Heidelberg standing behind him. To the left and right of the painting are two bronze statues of women, personifying fame and wisdom. Fame holds a trombone, while Wisdom wears a wreath and holds up a torch. They are the work of (1849-1898). In the lower part of the wall, there are three portraits of rulers: in the centre, a bust of Grand Duke
Frederick I, who was rector of the University in 1886, by the sculptor Karl Freiderich Moest; at right, Elector
Rupert I, the founder of the University; and, at left, Grand Duke
Charles Frederick, who refounded the University at the beginning of the 19th century.
Ceiling The decoration of the wooden ceiling consists of four round paintings by the painter (1826-1896), which depict the faculties of the University at the time in an allegorical fashion, as seated female figures with characteristic attributes: a scroll and a globe for
philosophy, a snake and a cup for
medicine, a sword of justice, book of law, and a diploma for
jurisprudence, and a Bible and tablet with the
Ten Commandments for
Theology. Rundbild Fakultät für Philosophie von Rudolf Gleichauf.jpg|Philosophy Rundbild Fakultät für Medizin von Rudolf Gleichauf.jpg|Medicine Rundbild Fakultät für Jurisprudenz von Rudolf Gleichauf.jpg|Jurisprudence Rundbild Fakultät für Theologie von Rudolf Gleichauf.jpg|Theology
Side walls Along both side walls and the entrance wall of the hall are listed thirty-seven names of famous Heidelberg scholars, divided into two rows - one on the upper frieze and one on plaques in the railings of the gallery. They range from
Marsilius of Inghen, the founding rector of the University in 1386, to 19th century professors like the chemist
Robert Bunsen and the physicist and physician
Hermann von Helmholtz. On the right balcony is the jubilee banner, which was made for the 500th anniversary of the University's founding. In the centre of the banner is an allegorical
personification of wisdom. On the back is a text saying "Donated by women and daughters of the academic teachers, 1886."
Entrance area An inscription in the upper frieze of the entrance-wall of the hall commemorates the Grand Duke of Baden. A congratulatory tablet from the
University of Freiburg from 1886 hangs above the doorway. Universität Heidelberg Alte Aula Eingangsbereich.jpg|Entrance area Gratulationstafel der Universität Freiburg im Torbogen.jpg|Congratulatory plaque from the University of Freiburg Inschrift im oberen Fries der Eingangsseite.jpg|Inscription in the upper frieze of the entrance area == Current use==