Cascading Staircase . They have to go with the contour of the mountain to comply with physics, something tells me the stairs are designed this way to limit the slope. There is no ceiling light over the stairs, and they can be quite treacherous as a result, especially. Classic Ski Cabin Design Meets Contemporary Luxury At The Crow’s Nest from www.decoist.com This staircase is work of art, built in the structure of a cascading waterfall. Our project was carried out within the framework. The cascading staircase is the longest in southern russia.