 Between 1418 and 1525, the Cathedral was adapted to Gothic style by master craftsmen.In the period from 1526 to 1551, the Bishop left Konstanz because of the Reformation, and moved his See across the lake to the Martinsburg in Meersburg.The radical iconoclasm instigated by the reformer Huldrych Zwingli in nearby Zurich, caused the destruction of artwork in the Cathedral.