The Pyramids of Egypt consist of a group of three pyramids: Khufu, Khafra, and Menkaura. It is the oldest wonder (estimated date of completion is 2680 B.C.) and the only wonder to survive today. The pyramids are located at the city of Giza, a necropolis of ancient Memphis, and today part of Greater Cairo, Egypt. The pyramids are gigantic stone structures that were built by the great Ancient Egyptian civilization off the west bank of the Nile as tombs for their Kings, which each pyramid is named after.

The largest pyramid is the Great Pyramid of Khufu (Cheops). It had an original estimated height of 481 feet, and now is approximately 450 feet. For more than 43 centuries it ranked as the tallest structure on Earth. The monument was built by the Egyptian pharaoh Khufu of the Fourth Dynasty around the year 2560 B.C. to serve as his tomb when he died. The project took over 20 years to finish. The pyramid base has sides 751 feet long and a sloping angle of approximately 51 degrees. The structure consists of approximately 2 million blocks of stone with the average weight of each being 2.5 tons.

The pyramids entrance is on the north face. There are a number of corridors, galleries, and escape shafts in the pyramid. The King's chamber is located at the heart of the pyramid and has red granite interior walls. There is a stone over the doorway that is 10 feet long by 8 feet wide that is approximately 4 feet thick. Today, all the pyramids are in an enclosed area along with the Sphinx.