Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://it.wikipedia.org/wiki/File:Rotonda_del_brunelleschi_12.JPG
http://3.bp.blogspot.com/-FQOM2jafL-0/TkrhBIjfObI/AAAAAAAABZY/DojHVpnEXmQ/s640/filippo-brunelleschi-rotunda-of-santa-maria-degli-angeli-begun-1434.jpg