Het Steen Het Steen (“the stone castle”) is Antwerp’s oldest building, built after the Viking incursions in the early Middle Ages. Currently houses a museum and performing arts centre. 12 May 2017 Antwerp Architecture Travel ← → Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website This site uses Akismet to reduce spam. Learn how your comment data is processed.