👉 Lieren is a term used in the context of architecture, specifically to describe the process of shaping and folding the surface of a building. It refers to the act of folding the walls of a building into a single piece, which can be achieved by carefully aligning the columns and arches to create a smooth, uniform surface. Lieren is often associated with medieval architecture, particularly those buildings that were designed for large-scale housing projects or were built in regions where there was limited space for traditional flat-ro
