This fantastic collaboration between the National Museum, National Gallery and four other organisations creates a superbly curated exhibition covering the artistic and cultural heritage of Iceland from settlement to today. Priceless artefacts are arranged by theme, and highlights include 14th-century manuscripts, contemporary art and items including the skeleton of a great auk (now extinct). The renovated 1908 building is beautiful, with great views of the harbour, and a cafe on the ground floor. Check website for free guided tours.