Photo of the day – Cathedral dome, Antigua, Guatemala

Ponder today’s Photo of the Day, by BaboMike. What looks at first glance like some sort of space-age cushion is in fact the interior of a cathedral cupola dome in Antigua, Guatemala. That this stark simplicity depicts a cupola dome seems improbable at first glance; after a sustained gaze, however, the surprise fades. What else, one wonders, looks simultaneously like itself and like something utterly different?

Optical illusion isn’t really a common Photo of the Day theme. But why shouldn’t it be? Upload your favorite image of an optical illusion to the Gadling Group Pool on Flickr. If we like it, we might just choose it as a future Photo of the Day.