As you ascend or descend a spiral staircase, the threads or steps revolve around a central point, forming a spiral pattern.

In addition to these basic considerations, there are a few other factors to keep in mind when designing a spiral staircase:

Iranian architect Eisa Ghasemian has recently proved that a staircase can be one of the core design pieces in a home that is functional, insanely aesthetically pleasing, and eye-catching at the same time.