title: 30th century BC in architecture
text: # 30th century BC in architecture
  
  ## Buildings and structures
  
  ### Buildings
  
  * Alvastra pile-dwelling – circa 3000 BC in Neolithic Scandinavia
  * Barbar Temple – oldest of the three temples built in 3000 BC, in present-day Bahrain
  * Diraz Temple – circa 3rd millennium BCE, in present-day Bahrain
  * Tepe Sialk – claimed to be the world's oldest ziggurat built in 3000 BC, in present-day Iran
  