🇪🇬 Egypt · Pyramid
Pyramid of Edfu South
Old Kingdom, 3rd Dynasty · Ancient Egyptian
Edfu South small step pyramid 5 km south of Edfu Temple: 18.3 m limestone 3-step to 5.5 m, Huni series c.2630 BCE overlooking Djeba.
🇪🇬 Egypt · Hydraulic works
Wadi el-Hudi Amethyst Mines
Old to New Kingdom (2600–1100 BCE; peak 2050–1650 BCE) · Egyptian (Middle Kingdom)
Middle Kingdom amethyst mining landscape with 14 quarries and fortified miners' fort.
🇪🇬 Egypt · Hydraulic works
Aswan Old (Low) Dam North Spur — First Cataract Gravity Buttress
British colonial (Anglo-Egyptian) · Anglo-Egyptian, French engineers
1902 610-m gravity masonry 180-sluice Low Dam north spur 6 km above High Dam, world's largest masonry then.