Basilica of Sant'Ambrogio, Milan, Italy Partial view of exterior Source: By Andrzej Otrębski (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons. http://commons.wikimedia.org/wiki/File%3AMilano_bazylika_Sant_Ambrogio_8.jpg

Basilica of Sant'Ambrogio, Milan, Italy Partial view of facade Source: "Milanoambrogio0002". Licensed under Creative Commons Attribution-Share Alike 3.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Milanoambrogio0002.jpg#mediaviewer/File:Milanoambrogio0002.jpg

Basilica of Sant'Ambrogio, Milan, Italy Nave Source By Giovanni Dall'OrtoG.dallorto (Own workSelf-published work by G.dallorto) [Attribution], via Wikimedia Commons. http://commons.wikimedia.org/wiki/File%3A0112_-_Milano_-_Sant'Ambrogio_-_Navata_centrale_-_Foto_Giovanni_Dall'Orto_25-Apr-2007.jpg

Basilica of Sant'Ambrogio, Milan, Italy Arches and matroneum (right side) in the main nave as they appear after 19th century restorations. Source: By Giovanni Dall'Orto (Own workSelf-published work by G.dallorto) [Attribution], via Wikimedia Commons. http://commons.wikimedia.org/wiki/File%3A0118_-_Milano_-_Sant'Ambrogio_-_Matroneo_destra_-_Foto_Giovanni_Dall'Orto_25-Apr-2007.jpg

Basilica of Sant'Ambrogio, Milan, Italy Interior view of cupola Source: By Giovanni Dall'Orto (Own workSelf-published work by G.dallorto) [Attribution], via Wikimedia Commons. http://commons.wikimedia.org/wiki/File:9662_-_Milano_-_S._Ambrogio_-_Ciborio_e_cupola_-_Foto_Giovanni_Dall%27Orto_25-Apr-2007.jpg

Basilica of Sant'Ambrogio, Milan, Italy Partial view of interior showing apse mosaic and ciborium Source: By Leandro Neumann Ciuffo from Rio de Janeiro, Brazil [CC-BY-2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons. http://commons.wikimedia.org/wiki/File%3ABas%C3%ADlica_de_S._Ambr%C3%B3sio_-_interior_(3529345698).jpg

Basilica of Sant'Ambrogio, Milan, Italy Partial view of ciborium and apse mosaic Source: By Giovanni Dall'Orto (Own workSelf-published work by G.dallorto) [Attribution], via Wikimedia Commons. http://commons.wikimedia.org/wiki/File:9851_-_Milano_-_S._Ambrogio_-_Mosaico_absidale_-_Foto_Giovanni_Dall%27Orto_25-Apr-2007.jpg

Basilica of Sant'Ambrogio, Milan, Italy Plan Source: 12th edition of the Encyclopædia Britannica or earlier. Public domain. http://commons.wikimedia.org/wiki/File:1911_Britannica-Architecture-S._Ambrogio.png