Final answer:
The first pharaoh of the Old Kingdom, Djoser, had the Step Pyramid constructed at Saqqara by his vizier Imhotep. This innovative structure signified the beginning of the Age of the Pyramids and is considered a revolutionary architectural feat in ancient Egyptian history.
Step-by-step explanation:
The first pharaoh of the Old Kingdom, Djoser, had this step pyramid constructed at Saqqara, the oldest stone building of its size in the world. Its architect was his vizier, Imhotep, who is renowned for stacking stone mastabas into a towering step pyramid enclosure, which served as a royal tomb conveying the king's god-like power.
Imhotep's innovations during Djoser's reign marked a new era of building in Egypt, initiating the Age of the Pyramids. The step pyramid was revolutionary for its time, composed of six mastabas and standing over 200 feet tall, it was the prototype for all future pyramid constructions, including the iconic Great Pyramid at Giza.
This multi-tiered pyramid at Saqqara represented a leap in Egyptian architecture, transitioning from mud-brick mastabas to large-scale stone constructions, thus symbolizing the sophistication and power of the Egyptian state during the Old Kingdom.