The pyramids of Giza are among the largest and oldest structures on earth. They are already thousands of years old. The Pyramid of Cheops (the middle pyramid) is the last remaining classical wonder of the world that can still be visited. The other buildings that belonged to the wonders of the world have decayed over time. The world-famous Sphinx stands in front of the pyramids. The Sphinx served as a watchman” against possible invaders. The monuments are located near the capital Cairo and are therefore easy to reach.