🇪🇬 Egypt · Pyramid
Layer Pyramid
Old Kingdom, 3rd Dynasty, ~2645 BCE · Ancient Egyptian
Unfinished layer pyramid of Khaba at Zawiyet el-Aryan (c.2645 BCE), 84 m base, accretion-layer technique.
🇪🇬 Egypt · Hydraulic works
Sadd el-Kafara North Embankment Wadi Garawi
Old Kingdom · 4th Dynasty Egypt (Sneferu to Khufu horizon)
North wing 55 m of world's oldest large dam (Old Kingdom) breached during construction.
🇪🇬 Egypt · Pyramid
Pyramid of Djedefre (Abu Rawash)
Old Kingdom, early 4th Dynasty · Ancient Egyptian
Egypt's northernmost royal pyramid, built c.2566–2558 BCE for Djedefre (Radjedef), eldest son of Khufu, on a plateau 8 km north of Giza overlooking Heliopolis.
🇪🇬 Egypt · Pyramid
Pyramid of Meidum
Old Kingdom, late 3rd – early 4th Dynasty · Ancient Egyptian
Collapsing transitional pyramid built by Sneferu (or Huni) at the mouth of the Fayum: first straight-sided true pyramid attempt, originally seven steps encased to form 92 m true pyramid; outer casing…