The following images were excerpted from the original Hirise image of Cydonia linked herein, and most are presented below at 200%, using the IAS Viewer.
Many of the images are in an area referred to as "Hoagland City Square" on Bob William's Cydonia Anomalies Archive Image Map.
Raw Images Courtesy of NASA and ESA. Special thanks to EVERYONE who has contributed in the search for Mars anomalies. Also thanks to Google, Picasa, ImageShack, and Photobucket.