Windmill in Męćmierz, Post mill in Męćmierz, Poland.

The Windmill in Męćmierz is a three-story wooden post mill with a rectangular plan, resting on a brick base and clad in vertical boards. Its walls taper upward, and the front gable is hung with a carved lambrequin decoration. Four reconstructed sails are mounted on the rear windward wall, and the mill is fixed with its sails facing the Vistula.

The mill was built in 1911 in the village of Osiny. In 1975 it was moved to Męćmierz and set on a high escarpment above the Vistula, keeping its original structure. Between 1975 and 1982 the interior was adapted for residential use, and in 1986 the mill was entered in the register of monuments.

Since 2013 the mill has housed a seasonal café called Pod Skrzydłami ("Under the Wings"). Its front gable is hung with a carved wooden pelmet-like valance, and the four reconstructed sails on the rear wall face the Vistula. The building is one of the few surviving post mills in the Lublin region.

The mill stands on a high escarpment above the Vistula, with external stairs added in 1997 leading to the second floor. Since 2013 a seasonal cafe called Pod Skrzydłami has operated inside. The sails face the river and the structure is fixed in that position.

The entire structure rotates around a central wooden post mounted on brick foundations, allowing it to turn according to wind direction. This rotating mechanism was an ingenious design that enabled millers to keep the sails optimally aligned with the wind.