No it wasn't Monopoly and it wasn't in a beauty contest! And unlike passing 'Go', I only received $100.
For the past three years I have put pictures into the Kapunda Regional Gallery's Photography Exhibition and Competition. This year there was a theme, "Things I love, Things I Fear." I put in two pictures titled, "The Knowing Dark" and "The Obscuring Fog". I won the prize with "The Knowing Dark".
The pictures were both the same size (unlike below, these are other versions)and professionally printed on quality art paper using archival quality inks.
(Clicking on the pictures takes you to my Flickr Photosharing page where you can see these pictures at a larger size.)