Digital twins

Real projects by real people: models of actual places and systems, and whether they run.

• 
  Bay Layers twin proposed

  A layered portrait of San Francisco Bay that explains a digital twin as four shared geographic layers: earth and seabed, natural forces, living systems and the built world.

  Cities & placesWaterLiving systems

• 
  Valdrada twin draft

  Mehmet Kerem Turkcan's city-scale digital twin of New York City's five boroughs, compiled from public municipal records, with real-time rendering, traffic and pedestrian simulation and a CARLA-style Python API.

  Cities & placesMovement & logisticsSensory landscape

• 
  Helsinki / Bologna twin proposed

  Helsinki publishes city-model data and an energy atlas; Bologna is developing civic twin infrastructure.

  Cities & placesEnergy

• 
  Dassault / Virtual Singapore twin draft

  A shared 3D city representation with associated data and simulation applications.

  Cities & places