St. Peter is one of the four main churches of old Zürich, besides Grossmünster, Fraumünster and Predigerkirche.Located next to the Lindenhof, the former Roman castle, it was built on the site of a temple to Iuppiter. An early church of 10 by 7 metres is archaeologically attested for the 8th or 9th century. This building was repl...