A mullion is the vertical element that forms a division between units of a window or screen, or is used decoratively. When dividing adjacent window units its primary purpose is a rigid support to the
A mullioned window in the church of San Francesco of Lodi, Lombardy
Gothic architecture is an architectural style prevalent in Europe from the late 12th to the 16th century, during the High and Late Middle Ages, surviving into the 17th and 18th centuries in some areas
Wells Cathedral West Front Exterior, UK Diliff
Sainte Chapelle Interior Stained Glass
Rouen Cathédrale Primatiale Notre Dame de l'Assomption Fassade Mittelportal Tympanon 2
Pointed arches in the 14th-century tower of the church of San Salvador at Teruel in Aragon