D
Our house is over a hundred years old, but there is a couple of dog paw prints in the basement. I dunno if they did it on purpose or if it was a mistake, but it's actually kind of cool.
Apparently, it's not good to tell my hubby the tile in the bathroom were hideous. I don't even remember saying it once, but one day he ripped out the wall to give me new tile. (And also plasterboard should be updated too, although I really didn't understand why when he told me.) And then we might as well update the whole bathroom.
The newest renovation in our house was done in September 1963 -- one month before JFK was killed. I know this because someone stuck a newspaper under the tub. We closed in the tub, but before we did, I tossed in that day's newspaper to surprise the next owners of this house.