Calendar Archives is a visualization plugin for your WordPress site which creates yearly calendar for your posts. Create a new page (having ‘no sidebars’ template) for your calendar archive and insert the shortcode [calendar-archive] in the editor. Load this page and enjoy the view!
Each day of calendar will display first available photo from posts of that day in the background. The plugin’s layout is customizable and having two working layouts for demonstration
For more details, see http://www.sanisoft.com/blog/2009/08/21/wordpress-plugin-calendar-archives/