The Image Captures and Architecture 

Glass in structures has an interesting effect of depicting the presence and absence of the object at the same time.  The decision to make a glass staircase was implemented on the same grounds. 

Similar to the prior mentioned calibre of glass, the two spaces are so connected that they become accessible to each other but without becoming dependent.

The positioning of the two tracks, i.e., one on the ground and the other one on the upper rectangular prism is so enforced to achieve separate spaces without disturbing the main traffic.