The Aula Leopoldinum is found on the 1st floor of the main edifice of the University of Wrocław. Embellished with elaborate stucco work, sculptures, paintings and a trompe l'œil ceiling fresco, it's the city's best Baroque interior. The more modest Oratorium Marianum, on the ground floor, is included in the admission fee. Classical music concerts are occasionally held here. You can also climb the Mathematical Tower.