Abstract: When and how does environment impact the evolution of galaxies? This question will be approached by considering two specific environments. First: The cores of massive clusters. Here, the largest, reddest galaxies of the local universe are found, Brightest Cluster Galaxies (BCGs). These galaxies are spatially aligned with the diffuse intracluster light (ICL). We'll explore recent results from an integral field unit survey of local cluster cores which provides photometric and spectroscopic evidence of a break in age, between the old red and dead BCG cores, and the younger ICL that surrounds them. Second: Cluster scale filaments. Here, galaxies find themselves in moderate density environments, where they are potentially able to interact with each other and the intracluster medium, initiating starbursts and undergoing quenching. Recent SITELLE observations from CFHT provide clear examples of emission line galaxies in cluster feeding filaments. Finally, we will discuss plans to extend the work with the upcoming Legacy Survey of Space and Time.