This was the first use of columns, with engaged columns on either side of the pathway. Their design was thought to mimic bundles of reeds, which would have been their predecessor.
The South Tomb was the entrance to numerous decorated burial chambers. These burial chambers were thought to store goods. The designs consistently mimicked plants -- such as the stone flourishes thought to emulate rolled up reed mats.
The Great Court was an open space within the Djoser enclosure with decorated interior walls and Heb sed 'B' boundary markers.
The pyramid itself, the first pyramid, was made of limestone blocks. It began as a mastaba, and subsequent mastabas were built atop it to create a stepped pyramid. It had a complex substructure with numerous chambers.
Heb Sed Court
The Heb sed court had shrines, with each thought to draw upon design elements from Lower and Upper Egypt. The stone architecture continued to recreate organic materials (eg, matting, reeds, etc).