In Paris, even the most rudimentary stairs illustrate attention to detail and fine artistry. Wooden stairs graced with inlaid tile. Tile stairs capped with bullnose wooden treads. Stone stairs finished with iron railings. Iron stairs cast and corrugated. Spiral stairs. Mysterious stairs that seem to go nowhere. Stairs that dive underground and stairs that climb to the heights. Never-ending stairs. All worn smooth by history, but still steady and strong. Everlasting examples of pulchritude in the practical.