Peterskirche, Reformed church in Basel, Switzerland.

The Peterskirche stands above the western edge of the Birsig valley, opposite the Martinskirche. Its red sandstone west portal has a rounded arch with fluted mouldings, a brown wooden double door, a semicircular leaded-glass transom and a band of carved wooden arcading. The nave, completed before 1388, is divided by arcades into a central vessel and two aisles; a rood screen with the organ, built around 1350, blocks the view into the choir.

The Peterskirche was founded in medieval times as a Catholic church before being converted to a Protestant place of worship during the 16th century Reformation. This transformation reflects the major religious shifts that reshaped Basel's spiritual life during that era.

The Peterskirche is Basel's oldest parish church, with roots stretching back to medieval times, and it played a key role in the city's Protestant reformation movement. The simple interior layout today shows how believers reshaped religious spaces to express their changing faith during that period.

The church is centrally located in Basel's old town and easily accessible on foot, with several bus stops and tram lines nearby. Keep in mind that it remains an active place of worship, so opening hours may vary depending on services or events.

The church holds the grave slab of printer Johann Froben, who died in 1527; its Hebrew text was written by Sebastian Münster, the Greek and Latin by Erasmus of Rotterdam. On the outer wall of the north aisle are epitaphs for the mathematicians Johann I, Nikolaus I and Daniel Bernoulli.