The Basel Minster (Basler Münster) is a medieval cathedral, situated on a twenty metres high hill high above the river Rhine. The Romans already had a fortress on this hill. The bishopric of Basel was founded in 343, with a residence in Augusta Raurica. In the early middle ages the bishop moved to Basel and the place served as temporary residence of the German kings, which was (and is) called Pfalz (PiP5), offering wonderful views over the Rhine.

Basel's first cathedral was built by bishop Haito (805-823). A larger church, named Heinrichsmünster after German king Heinrich II, was consecrated in 1019. Towards the end of the 11th century a tower on the west side was added - which is still part of today's Georgsturm. A new church building was erected between 1220 and 1230, but almost completely destroyed, due to an earthquake and fire in 1356.

This building was restored using basically the same ground plan, but with some Gothic style elements and consecrated in 1363. Attached to the church is a former monastery with two cloisters (PiP4). During the 16th century reformation the monastery was closed and the bishop expelled from the city.

The building as it stands today dates back for the most part to the late Romanesque building constructed in the last third of the 12th century and completed around 1225. The Basel Minster with its red sandstone architecture (PiP1), impressive interior (PiP2) and beautiful stained glass windows (PiP3) is one of the main landmarks of Basel and still an important tourist attraction.