With the current levels of population growth, many very intelligent people have dedicated their lives towards considering how we would go about constructing a sustainable city/urban environment. One important conclusion they’ve made is that the current way the western world goes about expanding cities outward and horizontally is not sustainable in the long run. This of course mean that the only sustainable way of continuing to grow our cities is if we grow them upward or downward, i.e vertically. From this, they’ve considered the ways they would go about growing a city vertically, and yet still maintaining all of the things which our modern society needs in order to function at the optimum level. If we are limited to expanding our cities and urban environments upward, what do we do about parks and other greenery? In order for our people to function properly, we can’t just have a concrete jungle, we need to have access to fresh air and wildlife. This creates an interesting dilemma for our city planners of the future to solve.