For the sake of discussion, let’s say you’re building a simple set of stairs for a deck, basement access, or up to an attic. You’ll just be using 2-by-12s for both the stringers and the treads. This ...

Portuguese studio Promontorio has transformed a 1980s office building in Lisbon into a high-tech headquarters featuring a spiralling concrete staircase. The firm, which has offices in Lisbon as well ...

A spiral staircase made of concrete rises through the centre of an open-plan office designed by architecture studio Hildebrand in Steinhausen, Switzerland. Winding its way up the building's four ...

You may be like most folks. I’m guessing you give very little thought to the stairs you go up and down on a regular basis. They might be constructed from wood, steel, or concrete. The vast majority of ...