In the 12th and 13th centuries, settlers brought half-timbered buildings from Thuringia, Franconia and southwest Germany to Saxony and thus also to the river pearl region. The construction of wood is spreading rapidly due to the high occurrence of wood. In the 17th century, the multi-storey building, also called frame building, prevailed in this country. The half-timbered structure, referred to as Franconian, is characteristic through a rhythmic wall structure. The most widespread form of jewelry in Saxony is the St. Andrew's cross, mostly on the front and visible as a frieze on the outer walls.