De Otter

De Otter is Amsterdam's last operational industrial wind-powered sawmill, a living monument from the 17th century that outperforms De Valk in sheer mechanical authenticity, with its original sawing machinery still processing timber. This landmark draws over 45,000 visitors annually who witness its genuine 1625-era blade mechanism, which cuts logs 30% faster than the typical reconstructed mill. Unlike the museum-focused De Valk, De Otter earns its keep by producing over 200 cubic meters of sawn wood yearly, making it the only fully functional heritage sawmill in the Netherlands.