The museum is devoted to presenting and preserving the cultural history of Alkmaar and the surrounding region.
The museum hosts a collection of historical paintings and artifacts, some of which date back to the period before the Protestant Reformation.
The older paintings are by the Master of Alkmaar, Frans Menton, Zacharias Paulusz, Caesar van Everdingen, Pieter Jansz Saenredam, Maarten van Heemskerck, Lambert Doomer, and Jan de Baen.
Some of the more prominent names in the collection are Charley Toorop, Henri Le Fauconnier, Jan Sluyters, Leo Gestel, and Piet Mondriaan (one sketch).
The museum has a café and holds temporary art exhibitions, often focusing on local artists and themes.