Great Pyramids of Giza
The Great Pyramid of Giza (a.k.a Pyramid of Khufu and Pyramid of Cheops) is the oldest and largest of the three pyramids in the Giza pyramid complex in Egypt. It is the oldest of the Seven Wonders of the World. The pyramid is an ancient tomb that took 10 - 20 years to construct and was built around 2560 BC.
It was the tallest man-made structure in the world for over 3,800 years!