Admirers of architecture shouldn’t miss this 17th-century Dutch baroque masterpiece, designed by Simon de la Vallée, Heinrich Wilhelm, Joost Vingboons and Jean de la Vallée. Used by the Swedish parliament between 1641 and 1674, it still hosts the triennial Assembly of Nobles. While the chancellery houses some 300 pieces of heraldic porcelain, the real scene-stealer is the Great Hall, plastered with 2345 coats of arms belonging to Swedish nobility, as well as a precious ivory-carved land-marshall’s chair from 1625 and a beautiful ceiling painting by 17th-century artist David Klöcker Ehenstrahl.
