The Jugendstilsenteret is Ålesund's Art Nouveau Centre, housed in a beautifully restored pharmacy building from the rebuilding period and dedicated to the story of the 1904 fire, the reconstruction, and the remarkable architectural legacy it created. The museum explains what Art Nouveau actually is — the organic forms, the curved lines, the integration of craft and fine art — before sending you out to look at the streets with newly informed eyes.
The permanent exhibition uses the pharmacy's original fittings and archive material to tell the story vividly. There's also a reconstruction of a period room and changing exhibitions on Art Nouveau themes. The gift shop is one of the better ones in Norwegian museums. Budget a couple of hours for the museum and then walk the streets around it; the Jugendstilsenteret provides the theory, but the town itself is the exhibition.