The winding staircase. Whenever I see one, I'm struck first with envy and then I wonder if I would ever get tired of walking in circle (especially if I'm tired). Well, dizzy or not, I think it's totally worth it. There's something nostalgic about a spiral staircase and although there are plenty of modern versions, the image always brings me to another place. I think, if I ever had the opportunity to build a house, I'd like one.