Students wishing to study at the University of Bonn may take courses from the Faculty of Philosophy (English Studies, American Studies, Celtic Studies, Archeology, Cultural Anthropology, German Studies, Literary Studies, History, Romance Philology, Orient and Asia Studies, Philosophy, Psychology, Political Science, Sociology, Musicology, German as a foreign language (teacher training!) and Art History.
Full list of courses may be found here
Majority of courses are taught through German.
Some courses are aimed specifically at Erasmus students.
There is also a course taught through English called "Germany. An Introduction into Geography, History and Politics", which is available in the first semester.
The Language Center provides B2+, C1 and C2 courses, focusing on academic language.