Knut August Almgren stole the technology for this former silk-weaving factory back in the late 1820s. While recovering from tuberculosis in France, he posed as a German-speaking Frenchman and gained access to factories where the innovative Jacquard looms were being used. He took notes, smuggled machinery out of the country and opened a factory in Sweden in 1833. The factory here closed down in 1974, but was then reopened as a working museum in 1991 by a fifth-generation Almgren. It reproduces silk fabrics for stately homes around Scandinavia, including the Royal Palace. The recently renovated additional floor houses an exhibition on the history of silk weaving in Sweden, along with a collection of silk portraits, landscapes and fabrics. You can watch its 160-year-old looms in action; they produce 2m (6.5ft) of fabric per day. Silk scarves and other handwoven fabrics are on sale in the gift shop.