4th millennium BC in architecture
The following events occurred in architecture in the 4th millennium BC:
Buildings and structures
Buildings
- Sialk ziggurat near Kashan, Iran
- Ġgantija – megalithic temple complex on the island of Gozo
- Harappa – fortified city of the Indus Valley civilization with as many as 40,000 residents
- Northern Europe
- * Céide Fields – oldest known field systems in the world, located in West Ireland
- *Brú na Bóinne complex – Neolithic passage tombs in County Meath, Ireland
- * Knap of Howar – oldest preserved stone house in northern Europe, on the Orkney island of Papa Westray occupied from 3500 to 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