Floating Staircase

Straight in layout, floating staircases do not include any risers. The treads are attached to the wall with no support on the other end. However, the attachment to the walls is kept hidden to give an impression that the treads are floating in the air. Some also use glass risers which remain invisible for the transparent characteristic. Primarily, floating staircases look best on wooden materials. But certain materials like metal or glass can make it similarly appealing. 

Feature

Unparalleled aesthetics that fit any contemporary house
Opens up new spaces underneath the treads

Benefit

Costly and maintenance is difficult
Not safe for everyone
Requires robust architectural suppor