The windmill was built between 1867 and 1869 after a design first produced in the Netherlands. Its name is that of its first owner – Riba. The windmill is one of the best preserved architectural monuments of its type in Latvia, and it offers an educational exhibition, “The Path of the Grain.” It talks about the development of agriculture in Zemgale and about grain farming and the baking of bread. Guided tours are available. The windmill is part of the Rožmalas leisure complex, which features a hotel and a restaurant.