This paper presents a novel approach and first results of creating a global data service and portal, SAMPOSAMPO, based on a data alignment service on top of a cloud of interlinked Cultural Heritage knowledge graphs and data services of different application domains. In this way, a more comprehensive global view for searching, exploring, and analyzing entities with enriched linked data and their semantic connections can be provided than by using local KGs separately. The portal can be used for searching and exploring a cloud of linked KGs with a single user interface (UI) and for finding semantic "interesting" connections (relations) between their entities with natural language explanations.