A subterranean shaft created by 19th-century engineer Isambard Kingdom Brunel is now accessible to the public for the first time in 150 years, thanks to a new staircase by architecture studio Tate Harmer (+ slideshow). More »
Readers were up in arms this week about a folded steel staircase, which they claimed were missing a crucial handrail. Our latest Pinterest board is dedicated to similarly extreme staircase design, from cantilevered wooden treads "as thin as plates" to a conceptual flight of steps attached midway up a skyscraper.
Sign up for a daily roundup
of all our stories