Above the entrance

Found above the front door of a house near where I'm staying. I have no idea what it means as I've never been able to take much interest in such things. Probably it either welcomes visitors or 'blesses' the house and its inhabitants. I've seen much less complex ones before - usually just the circular symbol in the middle of this one, which appears to be a sheet of laminated paper. It isn't without without humour - see the little cartoon faces above the characters in each corner.