About 25 miles (40 kilometres) to the south of Cairo, is the site of Dashur (also spelt Dahshur), the southernmost site in the Memphite Necropolis, which is best known for two of its pyramids, Snefru’s Bent and Red Pyramids, but there are another four pyramids here as well, though they are not accessible by the public: the White Pyramid of Amenemhat II; the Black Pyramid of Amenemhat III; the Pyramid of Senwosret III; and the Pyramid of Ameny Qemau.
During the construction of the Bent Pyramid it was found that the massive weight of the structure was starting to cause subsidence at its base. This made the architects decide to decrease the angle of the sides, which gave it its unusual appearance and nickname.
The Red Pyramid is regarded as the first true pyramid, built to have sloping sides and not as a step pyramid. Access to its interior is free of charge and is achieved by first climbing a staircase built on its northern face, followed by a steep descent down a wooden staircase.