The Crystal Cathedral

Several cathedrals in Europe, such as that of Strasbourg, Essen, Freiburg i.B., and in England at York, Lincoln and Southwell, are referred to as Minster (German: Münster) churches, from Latin monasterium, because the establishments were served by canons living in community or may have been an abbey, prior to the Reformation. The other kind of great church in Western Europe is the abbey.
Definition
The word cathedral is derived from the Latin word cathedra ("seat" or "chair"), and refers to the presence of the bishop's or archbishop's chair or throne. In the ancient world, the chair was the symbol of a teacher and thus of the bishop's role as teacher, and also of an official presiding as a magistrate and thus of the bishop's role in governing a diocese.