The "Bent Pyramid," named thus because of its literally crooked structure. This pyramid was built when the Egyptians were still experimenting with pyramid-building. Halfway through the project, the architects realized the pyramid would fall over if they continued at the same angle they started at. So, they reduced the angle of the pyramid and continued building. In other words, the top of the pyramid is at a less steep incline than the bottom half, which gives it a "bent" shape.