WC as far as I know does not use real world data, there is a product which has a plugin for Unreal’s Datasmith called City Engine that you can download a trial here: Procedural 3D City Generator | 3D City Design for Urban Environments
WC as far as I know does not use real world data, there is a product which has a plugin for Unreal’s Datasmith called City Engine that you can download a trial here: Procedural 3D City Generator | 3D City Design for Urban Environments