"Up" to Code?

On should wonder about a second story door such as this. Perhaps the architect had a previous life working for Warner Brothers and was in charge of "Yosemite" Sam pratfalls. Or perhaps, it is there in case Tweety, living in the bird hole above it, wants a visitor. Whatever the case, just take Bugs Bunny's advice to heart: "Watch that first step, it's a LULU!"