As a partner in the EU co-funded 3D-ICONS project, the Discovery Programme has surveyed a wide range of the iconic cultural heritage sites in Ireland. This project aimed to establish a complete pipeline for the production of 3D replicas of archaeological monuments and historic buildings, and to publish the content to Europeana for public access. Challenges discussed include: making such high resolution data sets available to the public to enable online interaction and via the web, creating suitable and representative metadata and IPR frameworks for 3D cultural heritage data.