 During the course of the Reformation, the Wasserkirche was identified as a place of idolatry.Eventually it was secularised, becoming the first public library of Zürich in 1634, when it became a seat of learning that greatly contributed to the foundation of University of Zürich in the 19th century.The island was connected with the right bank of the Limmat in 1839 with the construction of the "Limmatquai".