The Great Pyramids

Giza, Egypt. Fourth Dynasty, c. 2575-2450 BCE. Erected by (from the left) Menkaure, Khafre, and Khufu. Limestone and granite, height of pyramid of Khufu, 450′ (137 meters).

Recommended Reading

BBC History Article

Building the Great Pyramid

Khan Academy Articles

The Great Pyramids of Giza