The building now used by the CIIS belongs to the Udo Keller Foundation Forum Humanum. Since the Udo Keller Foundation acquired the building from the Protestant regional church in Württemberg in 2004, they have completely renovated it and now allow the CIIS to use it free of charge.
Even though the building was constructed in 1911, it still possesses the stylistic elements of art nouveau. Today, the building has a large lecture hall and two seminar rooms available. The CIIS also has its own library, splendidly developed office spaces and several workrooms for visiting lecturers.
The building was ceremoniously given over to the University of Tübingen and the CIIS from the Udo Keller Foundation on May 3rd 2006.