is the 9m tall stained glass of the North transept, created by Augusto Giacometti in 1940. Fraumünster's Crypt museum Since the last renovation in 1900, the crypt under the choir of the Fraumünster abbey was sealed, and has made public since 19 June 2016. The oldest part of the church preserved the abbey's Holy Relics until the Reformation in Zürich banned the Roman Catholic adoration of saints. The foundations of the crypt date back to the 9th century when the abbey was founded. The crypt also comprises an exhibition on the history of the Reformation in Zürich, on the architecture and local history, assisted by a multimedia information system that illustrates the foundation fragments of the crypt, and how the church was rebuilt from the original Romanesque construction phase to its present Gothic appearance, on occasion of its establishment guided by Dölf Wild, the archaeologist in charge. Facilities For the around 500,000 visitors every year a new developed visitor management started in June 2016. Visitors groups up to 60 persons are admitted from June 20 only by appointment and only in defined time windows. Guided tours are allowed only in a "whisper" modus, and by accredited tour guides, from 10 am to 4 pm in winter, and to 5 pm and 6 pm in spring respectively summer. The organ With 6.959 pipes, the organ at Fraumünster is the largest in the canton of Zurich. Gallery Abbesses Hildegard (828-856 or 859), first abbess of Fraumünster Abbey Katharina von Zimmern (1478-1547), last abbess of the Abbey Cultural heritage of national importance In the Swiss inventory of cultural property of national and regional significance the Fraumünster is listed as a Class A object of national importance. Literature Peter Vogelsanger: Zürich und sein Fraumünster. Eine elfhundertjährige Geschichte (853–1956). NZZ Libro, Zürich 1994, See also Grossmünster Wasserkirche References External links Benedictine monasteries in Switzerland Benedictine nunneries in Switzerland Museums in Zürich Archaeological museums in Switzerland Archaeological sites in Switzerland History of Zürich Reformed churches in Zürich Cultural property of national significance in the canton of Zürich Christian monasteries established in the 9th century 9th-century establishments in Switzerland Gothic architecture in Switzerland Religious buildings and structures completed in 853