The town of Ipswich, Massachusetts in the Ipswich river watershed was mapped at the sub-parcel scale using object-based image analysis. Look at the map's inset for detail. Individual objects such as houses, trees, and shrubs are mapped using 45cm 4-band aerial photography to describe the contents of tens of thousands of parcels in the Ipswich and Parker river watersheds of Massachusetts. Virtual globes are used to determine the extent to which the methodology has properly classified the imagery.