ocr: History of Pyramids in Egypt Pharaohs first ruled Egypt 5,000 years ago. When pharaohs died, they were buried in mastaba tombs. A mastaba isas small building with a burial room underneath it. Then, 4,650 years ago, the pharaoh Djoser had a pyramid built. Designed by the architect Imhotep, it was probably the first monumental stone construction in the world. Itis a step pyramid. Each side is like a large staircase. Other pharaohs built step pyramids, too. made before pharaohs began to build pyramids with straight sides. Less than 100 years after Djoser's See Also: step pyramid was constructed, ...