Detail of the remainings of the original altarpiece from the shrine of <a href="https://en.wikipedia.org/wiki/Felix_and_Regula" class="extiw" title="en:Felix and Regula">Felix and Regula</a> in the <a href="https://en.wikipedia.org/wiki/Grossm%C3%BCnster" class="extiw" title="en:Grossmünster">Grossmünster</a> showing the martyrdom in front of a panorama of the city of <a href="https://en.wikipedia.org/wiki/Zurich" class="extiw" title="en:Zurich">Zurich</a>
<a href="https://de.wikipedia.org/wiki/Hans_Leu_der_%C3%84ltere" class="extiw" title="de:Hans Leu der Ältere">Hans Leu der Ältere</a>, upload by <a href="//commons.wikimedia.org/wiki/User:Sidonius" title="User:Sidonius">sidonius</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Sidonius" title="User talk:Sidonius"><span class="signature-talk">talk</span></a>) 09:12, 22 August 2008 (UTC)
Ende 15. Jahrhundert
Peter Vogelsanger: Zürich und sein Fraumünster. Eine elfhundertjährige Geschichte (853–1956). NZZ: Zürich 1994.