The Great Pyramid of Giza
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Okay. So this is the not so great Pyramid of Hebron, Indiana. It took a long time to build and two workers. It's made of 1-3/8 cube blocks, but then we cheated and added a lot of 3/4 inch craft cubes. Getting the angles right took a lot of work, but in the end the sides are very close to the actual 51.5 degrees.
The Real thing is the Pyramid of Khufu, the largest of the iconic pyramids of Egypt and the remaining example of the great wonders of the ancient world. It was built around 2500 BC and was almost 500 feet tall. It had a smooth covering but that has disappeared except at the very top. Known chambers inside and various tunnels make the inside a continuing mystery.