Ramps galore

In my little world there is no place for stairs. Ramps are everywhere instead. I designed a car park inside my head and it is very hard to describe it in writing but to cut a long story short I would say the entire car park is one single ramp and it eventually resembles some kind of helter skelter structure where the boundary between each floor is not clear only you are above the layer of parked cars below so you know you are on a level.  

In my little world there is also a thing called a show-bow. A show-bow is a road roundabout with a ramp on one or more sides that raises up 1.3 meters and looks like a large smooth speed bump. It is there because a walk way also drops down 1.5 meters below it so there is a small walkway that leads to the middle of the roundabout that is 2.5 meters of head space. There is a spiralling ramp in the middle of the roundabout that leads to a subway train station. The spiralling ramp looks like a helter skelter double helix type structure, similar to the twisted rungs of DNA. No escalators are needed at all, not even to go up. The ramp is shallow enough that people can walk up or down it.