The three main pyramids at Giza are named the Great Pyramid of Khufu, the Pyramid of Khafre, and the Pyramid of Menkaure. The Great Pyramid of Khufu is the largest and the oldest of the three, standing as the last remaining Wonder of the Ancient World. The Pyramid of Khafre is slightly smaller and is distinguished by having a preserved portion of its original limestone casing at the top. The Pyramid of Menkaure is the smallest of the three and is notable for its intricate interior design.