This wooden bird box was created by Cameo Alpacas and Garden Art, a company run by Pearl Anderson and Elod Gunther and based in Woodbridge in southern Tasmania. The bird box is a recreation of a medieval castle, complete with corner towers with crenelated parapets, with the walls between the towers also having crenellation. The pointed arch entrance to the castle includes a possible representation of a bridge or drawbridge, which the bird could sit on. The photograph was taken at the Tasmanian Craft fair held in the town of Deloraine.
For more of their creations see http://ausmed.arts.uwa.edu.au/items/show/1185