The following events occurred in architecture in the 4th millennium BC:

• Sialk ziggurat near Kashan, Iran (3200BCE)
• gantija - megalithic temple complex on the island of Gozo (part of Malta, c.3600 2500 BCE)
• Harappa - fortified city of the Indus Valley Civilization with as many as 40,000 residents (3300 1600 BCE)

• Northern Europe
  • C ide Fields - oldest known field systems in the world, located in West Ireland
  • Br na B inne complex - Neolithic passage tombs in County Meath, Ireland (c.3300 2900 BCE)
  • Knap of Howar - oldest preserved stone house in northern Europe, on the Orkney island of Papa Westray occupied from 3500 3100 BCE
  • Skara Brae - Europe's most complete Neolithic village located in the Bay of Skaill in Orkney, Scotland
  • Stonehenge - the earliest phase of the monument has been dated to about 3100 BCE
  • Sweet Track - oldest known engineered roadway located in Shapwick, Somerset, England (3806 BCE)

See also

• Timeline of architecture

fr:IVe mill naire av. J.-C. en architecture