In this talk I will present the first results from the MAGNUM survey (Measuring Active Galactic Nuclei Under MUSE Microscope), which is aimed at exploiting the unique combination of large field of view and spectral range provided by MUSE for detailed physical studies of the interaction of AGN outflows with their host galaxies and of the connection between AGN activity and star formationData have been obtained for about ten galaxies so far, including the famous NGC 1068, NGC 1365, Circinus and NGC 4945. MUSE has allowed us to map the AGN-driven outflows in several different emission lines revealing a clear kinematical and spatial structure related to the ionisation cone and which depends on line excitation. Further insight has been gained by comparing emission line maps from MUSE with high resolution X-ray images from Chandra. Finally, possible evidence for star formation triggered by AGN outflows has been found.