The Grossmünster is a Romanesque-style Protestant church in Zürich, Switzerland. It is one of the four major churches in the city. Its congregation forms part of the Evangelical Reformed Church of the Canton of Zürich. The core of the present building near the banks of the Limmat was constructed on the site of a Carolingian church, which was, according to legend, originally commissioned by Charlemagne. Construction of the present structure commenced around 1100 and it was inaugurated around 1220.

The Fraumünster is a church in Zürich which was built on the remains of a former abbey for aristocratic women which was founded in 853 by Louis the German for his daughter Hildegard. He endowed the Benedictine convent with the lands of Zürich, Uri, and the Albis forest, and granted the convent immunity, placing it under his direct authority. Today, it belongs to the Evangelical Reformed Church of the canton of Zürich and is one of the four main churches of Zürich, the others being the Grossmünster, Prediger and St. Peter's churches.