The pyramid of Menkaure is the smallest of the three main pyramids of the Giza pyramid complex, located on the Giza Plateau in the southwestern outskirts of Cairo, Egypt. It is thought to have been built to serve as the tomb of the Fourth Dynasty Egyptian Pharaoh Menkaure. Menkaure's pyramid had an original height of 65.5 meters (215 ft), and was the smallest of the three major pyramids at the Giza Necropolis. It now stands at 61 m (200 ft) tall with a base of 108.5 m (356 ft). Its angle of incline is approximately 51°20′25″. It was constructed of limestone and Aswan granite. The first sixteen courses of the exterior were made of the red granite. The upper portion was cased in the normal manner with Tura limestone. Part of the granite was left in the rough. Incomplete projects such as this pyramid help archaeologists understand the methods used to build pyramids and temples.