The Great Pyramid is made from around 2.3 million stone blocks. Each block weighs roughly the same as two cars. People built the whole thing by hand, with ramps and ropes, long before there were any wheels with spokes, any metal tools we'd recognise, or any cranes.
It used to be even more dazzling than it is today. The whole outside was once covered in smooth white limestone that shone like a mirror in the sun. From far away, the pyramid would have looked like a giant white triangle catching the morning light.
Egyptians built the pyramids as homes for their kings and queens, who were called pharaohs. Inside are stone passageways and chambers, and treasures the pharaohs wanted to keep with them. The pyramids were designed like enormous time capsules - meant to last forever.
Three pyramids stand close together at Giza, plus several smaller ones nearby. The biggest belongs to King Khufu. The second to his son Khafre. The third, smaller one to his grandson Menkaure. A pharaoh family, in giant stone, on the desert horizon.