The Meersburg Castle may go back to a Merovingian attachment at the ferry transfer of the important road connection from Oberschwaben via Konstanz to Rätien. The Königsburg, to which a small settlement already belonged, has been in the hands of royal loan carriers who called herself after her, and then went into the possession of the bishops of Constance, which was a fiefdom The Counts of Rohrdorf issued. The oldest preserved parts of the building also date from this time.