Stairs to Heaven

Which stairs' shapes and forms are possible nowadays - or should I rather ask - which are not possible?
No links, no bolts, no rails - this is what the minimalism propose to us.
What if we like a safe staircase? We can transform a prop into a piece of art, giving the stairs the lightweight and letting the light go through. Sometimes, specially in the small double floor apartments painting the stairs in white will immediately give a fresh, modern look to the house.