St. Stephan is a municipality in the Obersimmental-Saanen administrative district in the canton of Bern in Switzerland. The namesake is the First Century martyr.
St. Stephan is first mentioned in 1352 as Sant Stephan.
The village grew out of a Burgundian royal estate located in a pass to Valais. In 994 it the royal family donated St. Stephan to Selz Abbey. Eventually the village became part of the lands of the Freiherr of Raron. In 1456 it passed to the Bubenberg family and then in 1494 was acquired by the city of Bern.
The village church of St. Stephan was built in the Early Middle Ages. The original building was renovated and expanded in the 12th and 15th centuries. It was originally a filial church of the parish church in Zweisimmen. In 1335 Interlaken Abbey took over the patronage of St. Stephan. In the 15th century the residents began attempting to break away from the Abbey and form their own parish. Despite authorization from the Pope in 1430 and a decision of the Council of Basel in 1433, the Abbey remained in control. Finally, in 1525, the villagers were released from the Abbey's patronage and formed their own parish. Three years later, in 1528, Bern adopted the new faith of the Protestant Reformation. Interlaken Abbey and majority of the Bernese Oberland resisted the new faith. However, in the same year, Bern forced the Oberland, including St. Stephan, to convert.
The Collegiate Church of St. Stephan, known in German as St. Stephan zu Mainz, is a Gothic hall collegiate church located in the German city of Mainz.
St. Stephan zu Mainz was originally built in 990 at the order of Archbishop Willigis, who also initiated the building of Mainz Cathedral. The church was founded on top of the highest hill in the town, most likely on behalf of Theophanu, the widow of Otto II, Holy Roman Emperor. Willigis intended the church to be a site of prayer for the Empire.
The provost of the Collegiate Church administered one of the archdiaconates (a medieval organizational form similar to today's diaconates) of the Archbishopric of Mainz.
The current church building dates from the late medieval era; construction of the main area of the church began in about 1267 and was completed in 1340. The successional building kept the guidelines of the floor plan of the original Willigis building and with it the design as a double quire church. St. Stephan is the oldest Gothic hall church in the Upper Rhine district, and is (besides Mainz Cathedral) the most important church in the city of Mainz.