I want this sign:

"Kelburn Castle is a large house in Scotland.
It is the seat of the Earl of Glasgow. Originally built in the thirteenth century it was remodelled in the sixteenth century.
In 2007, after experts told the owners that the concrete facing would eventually need to be replaced to avoid further damage to the stone walls, the Earl invited graffiti artists to paint the walls."
via http://dilidoo.com (not safe for some workplaces...)