Synoptic view of the PHANGS multi-wavelength data using NGC 3351 for illustration. Left: blue and red contours showing the footprints of the PHANGS-ALMA and PHANGS-MUSE data. Within the respective footprints, we show flux maps for Hα from MUSE (light red) and CO(2–1) from ALMA (light blue). The footprint of the HST observations included in the PHANGS-HST data release is also shown as an orange contour. Right: HST imaging (F814W filter) shown in colour. The image covers a larger FoV with respect to the left panel in order to show the entire area imaged by HST. We also indicate several radial metrics: the disc scale length (R_d, as derived in Leroy et al. 2021a) and R₂₅. The ALMA and MUSE footprints are also shown, same as in the left panel. We note that all MUSE, ALMA, and HST footprints of the 19 galaxies can be found at https://archive.stsci.edu/hlsp/phangs-hst.