Notre Dame Cathedral, Paris, France General view of south facade Source: "Notre Dame dalla Senna" by Zuffe - Own work. Licensed under Creative Commons Attribution-Share Alike 3.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Notre_Dame_dalla_Senna.jpg#mediaviewer/File:Notre_Dame_dalla_Senna.jpg

Notre Dame Cathedral, Paris, France Principal (west) facade at night (illuminated) Source: "NotreDameDeParis" by Sanchezn - Own work. Licensed under Creative Commons Attribution-Share Alike 3.0-2.5-2.0-1.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:NotreDameDeParis.jpg#mediaviewer/File:NotreDameDeParis.jpg

Notre Dame Cathedral, Paris, France East facade with spire and flying buttresses. Source: "Notre Dame de Paris, East View 140207 1" by DXR - Own work. Licensed under Creative Commons Attribution-Share Alike 3.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Notre_Dame_de_Paris,_East_View_140207_1.jpg#mediaviewer/File:Notre_Dame_de_Paris,_East_View_140207_1.jpg

Notre Dame Cathedral, Paris, France Notre-Dame's principal facade showing the Portal of the Virgin, Portal of the Last Judgment, and Portal of St-Anne Source: "Notre Dame Paris front facade lower" by Benh LIEU SONG - Own work. Licensed under Creative Commons Attribution-Share Alike 3.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Notre_Dame_Paris_front_facade_lower.jpg#mediaviewer/File:Notre_Dame_Paris_front_facade_lower.jpg

Notre Dame Cathedral, Paris, France Nave. The new bells of the cathedral on public display in February 2013. Source: "Cathedrale Notre-Dame de Paris nef nouvelles cloches" by Myrabella - Own work. Licensed under Creative Commons Attribution-Share Alike 3.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Cathedrale_Notre-Dame_de_Paris_nef_nouvelles_cloches.jpg#mediaviewer/File:Cathedrale_Notre-Dame_de_Paris_nef_nouvelles_cloches.jpg

Notre Dame Cathedral, Paris, France Altar Source: "Notre Dame Altar July 2005" by Kurt Muehmel. Licensed under Creative Commons Attribution 2.5 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Notre_Dame_Altar_July_2005.jpg#mediaviewer/File:Notre_Dame_Altar_July_2005.jpg

Notre Dame Cathedral, Paris, France Rose window Source: "Roosvenster van de notre dame de paris" by User Dorgan. Licensed under Public domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Roosvenster_van_de_notre_dame_de_paris.jpg#mediaviewer/File:Roosvenster_van_de_notre_dame_de_paris.jpg

Notre Dame Cathedral, Paris, France Plan Source: Fletcher, Banister. A History of Architecture on the Comparative Method. Sixth edition, rewritten and enlarged. New York: Charles Scribner's Sons, 1921, p. 105. Provided courtesy of Allan Kohl. https://www.flickr.com/photos/psulibscollections/5836371878/