The CCF Organ VR Gallery lets the user explore 21 human organs, journeying from the Whole Body, to the Organ, to the Cell stage and back, presented in real-world size and 3D. The user discovers hidden regions by exploding and collapsing organs into their individual anatomical structures. We show cell type populations for a kidney using a data-driven dot density visualization. The organ models were developed to map trillions of cells for the Human BioMolecular Atlas Program (HuBMAP).