Pyramid of Giza

The only one of the 7 wonders of the ancient world to remain largely intact, The Great Pyramid of Giza is a massive ancient structure that is recognizable all over the world. It was built in 2560 B.C. and was the tallest man-made structure in the world for nearly 4,000 years. There are at least three chambers within the pyramid. A crazy fact about this pyramid is that it is said to contain about 2.3 million stone blocks, each weighing anywhere from 2-30 tons.