Mass-weighted stellar age map (left) and stellar metallicity map (middle) of NGC 1553 derived from the Voronoi-binned MUSE data cube. Overlaid black contours represent isophotes from the MUSE white-light image, spaced at intervals of 0.2 mag. The dashed black ellipse marks the central 13 arcsec region corresponding to the nuclear disc–lens. North is up and east is to the left. The SFH is shown on the right, where each profile represents the SFH of an individual bin.