Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://commons.wikimedia.org/wiki/File:Galerie_of_the_Palais_Royal_-_interior,_1831.jpg
http://www.bifurcaciones.cl/bifurcaciones/wp-content/uploads/2013/07/Figura-11.jpg
http://thesecretarcadenews.blogspot.com.es/2011/05/secret-arcade-needs-you.html
http://www.parisenimages.fr/fr/galerie-collections/704-9-interieur-galerie-dorleans-au-palais-royal-paris-1900
https://farm6.staticflickr.com/5598/15434384401_f80e7d380c_z.jpg
http://commons.wikimedia.org/wiki/File:Construction_de_la_galerie_d%27Orl%C3%A9ans,_1829.jpg
http://www.anticstore.co.uk/9082P
http://www.lookandlearn.com/history-images/XB217032/Galerie-dOrleans-at-the-Palais-Royal?img=0&search=Galerie+d%27Orleans&bool=phrase
http://www.shafe.co.uk/art/17-_paris-_galerie_d-orleans-_fontaine.asp
http://www.ngiyaw-ebooks.org/ngiyaw/pfennig_18330511/palais_royal.htm
http://www.thomasgransow.de/Paris/Paris_Passagen.html