The Houf Pyramid, the largest pyramid in the world, is the only remaining building among the seven ancient wonders. Here we can climb the pyramids, so we can go up high to take pictures. This kind of ancient building will not exist forever. Many places have been weathered. You can also go underground to see Pharaoh's mausoleum. It's too crowded, narrow and choking. I didn't dare to go for safety. It's a wonder of the world to be able to take pictures here and see it with your own eyes.