Spatial distribution of GCs (blue squares) and CN-strong halo giants (colored according to their distance) in Galactic coordinates (left) and the Cartesian Galactocentric frame (right). The dashed line in the left panel denotes the celestial equator. The SDSS footprint area is depicted in white while the Gaia all-sky map is illustrated in the background for orientation. Image credit. Gaia Data Processing and Analysis Consortium (DPAC); A. Moitinho/A. F. Silva/M. Barros/C. Barata, University of Lisbon, Portugal; H. Savietto, Fork Research, Portugal.