Transcription: history of pyramids in Egypt. Pharaohs first ruled Egypt 5,000 years ago. When pharaohs died, they were buried in mastaba tombs. A mastaba is a 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. It is a step Each side is like a large staircase. Other pharaohs built step pyramids too. Less than 100 years after Joser's step pyramid was constructed, a bent pyramid was built. The bent pyramid has steep sides and a gently sloped top. O ...