Galaxy centers are extremal environments that host massive black holes and uniquely dense nuclear star clusters.  My talk will focus on the origin of both of these objects.  The formation of massive black holes remains a mystery, but important clues lie in how common they are in dwarf galaxies.   Nuclear star clusters surround many of these massive black holes and their formation can be directly studied through their stellar populations.  I will summarize past results on the abundance and masses of black holes in nearby dwarf galaxies and then focus on our nearest galaxy nucleus, the star cluster Omega Centauri.  Omega Centauri is the most massive star cluster in the Milky Way, and there is strong evidence it was once the nucleus of a dwarf galaxy that fell into the Milky Way.  The ongoing oMEGACat survey has revealed several exciting new results on Omega Cen over the past year, including the presence of an intermediate mass black hole atthe cluster center (Haeberle et al. 2024), and the best measurement of the cluster’s star formation history (Clontz et al. 2024).