The bright blue Franck House of Marktheidenfeld is a cultural center and offers numerous exhibitions of contemporary fine arts. The passage to the courtyard is decorated with two ceiling paintings; they pay homage to Ceres and Bacchus, the goddess of vegetable growth and the god of wine. Monograms by the client Franz Valentin Franck (1702 - 77), a wealthy wine merchant and merchant, can be found on the round arch of the cellar entrance and in the courtyard.