CityGML dataset obtained from IFC (storey of one building) with the approach developed within the IFC2CityGML project at the National University of Singapore. Source of the input IFC dataset: BCA Singapore. Source of the image: Konde A et al. (2018). Floor plans in CityGML. ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., IV-4/W6: 25–32.