Art-historical institutions such as museums and archives are digitizing their object collections, and the same is happening to related art-historical documentation and discourse. Digitized collections allow for new forms of representation and reception, as provided by multiple methods of information visualization. But how can we create more interconnected “bigger pictures” of rich cultural collections? With regard to linked cultural heritage data, we introduce the PolyCubism framework as a means to overcome the imminent risk of putting linked data back into "visualization silos". By utilizing a flexible visualization system of coordinated space-time cubes, a wide variety of relations between entities within the field of art and in other fields of society can become visible.