I have always been fascinated by stairs; at a young age I was disappointed when escalators were introduced at a downtown department store and have been over compensating ever since. The images in this composite date from 1981 through 2001. As stairs have been and still are an intregral structural component of any building above one story and can also be aesthetic in their function, I identify spiral staircases with DNA, and so have included two spiral staircases intertwined as a double helix.