Trompe l’oeil is a fancy French phrase for optical illusion in painting. It is often used to create the illusion of architectural detail. You may have seen a building with a facade and windows and awnings that do not really exist, but are very realistically painted onto a flat wall. That’s the type of trompe l’oeil I’ve employed in our kitchen. We really do have a window. But we didn’t really have a window frame. Until I painted one on.