This paper concerns the idea of publishing heterogenous cultural content on the Semantic Web. By heterogenous content we mean metadata describing potentially any kind of cultural objects, including artifacts, photos, paintings, videos, folklore, cultural sites, cultural process descriptions, biographies, history etc. The metadata schemas used are different and the metadata may be represented at different levels of semantic granularity. This work is an extension to previous research on semantic cultural portals, such as MuseumFinland, that are usually based on a shared homogeneous schema, such as Dublin Core, and focus on content of similar kinds, such as artifacts. Our experiences suggest that a semantically richer event-based knowledge representation scheme than traditional metadata schemas is needed in order to support reasoning when performing semantic search and browsing. The new key idea is to transform different forms of metadata into event-based knowledge about the entities and events that take place in the world or in fiction. This approach facilitates semantic interoperability and reasoning about the world and stories at the same time, which enables implementation of intelligent services for the end-user. These ideas are addressed by presenting the vision and solution approaches taken in two prototype implementations of a new kind of cross-domain semantic cultural portal “CULTURESAMPO—Finnish Culture on the Semantic Web”.