"Nothing dictates whether the skies shall be marked off into constellations or other objects. We have to make what we find, be it the Great Dipper, Sirius, food, fuel, or a stereo system." (Nelson Goodman) Various philosophers have claimed that facts of a certain sort somehow depend on our perspective on the matter. It has for example been suggested that causal facts, temporal facts, moral facts, facts concerning existence, identity, boundaries, etc. are perspective-dependent. Such a position goes under various names: perspectivalism, anti-realism, ontological relativism. This workshop aims at reviewing new arguments for and against.