The staircase "Londra" is an all glass staircase, NOT using any steel elements at all. It consists of glass by 100% (except for the interlayers used for lamination). The absolute transparency occuring is the exciting part of this staircase. Wood can be used for the treads as well.
An additional feature would be LED light to illuminate the glass treads. More informationd and photos will be available once the project is completed.