Since 2015, SearchCulture.gr, the Greek cross-domain Cultural Data Aggregator, a service developed by the National Documentation Centre in Greece (EKT), has collected a growing number of 810,000 digitised Cultural Heritage Objects (CHOs) from 82 cultural institutions. SearchCulture.gr, as part of its aggregation workflow, applies semantic enrichment to EDM properties that refer to contextual entities such as Types, Agents, Timespans, Subjects and recently Places. In this paper we present this latest development with regards to enriching more than 500k item records with GeoNames, facilitating spatial search and browsing functionalities and map-based discovery.