Are there any ancient buildings more famous than the pyramids? Today, I’ll be building the biggest of them: the Great Pyramid of Giza. It’s unknown how exactly the structure of 2,300,000 blocks of stone is made, despite decades of archeological investigation. The pyramid is believed to be built for the tomb of Khufu, a pharaoh of the Fourth Dynasty. The pyramid stands 146.5 meters high and took 27 years to build.