Before you reach Estonia's biggest island, you must drive across the island of Muhu, and at is farthest point you may notice an old post mill. The Eemu windmill is a typical wooden structure, with a set of stairs attached to its body (turning together with the rest of it!). Climbing these stairs, you reach the mill's two floors, where you can see the old grinding mechanism.
Next to the windmill is a manual millstone that you can use to experience flour-making the very old-fashioned way.