Moulin de Mistou, Historical monument in Mauperthuis, France.

Moulin de Mistou is an estate in Mauperthuis featuring a pyramid structure within its grounds that displays classical proportions. The pyramid has a columned portico entrance and incorporates an internal grotto beneath its stone construction.

The pyramid was built in 1782 as part of the gardens attached to Mauperthuis Castle, possibly under the direction of prominent architects of that period. It remains a remnant of this former aristocratic garden complex.

The structure shows features of 18th-century French garden design, combining geometric shapes with landscape principles of that era. It was part of a larger garden system that connected different architectural elements together.

The structure sits within the estate grounds and can be viewed from that location. Access comes through the private gardens, so checking in advance about visiting opportunities is recommended.

The pyramid was completed in 1782 for the park of the Château de Mauperthuis, which has since disappeared; its architect is still unidentified, with attributions to Alexandre-Théodore Brongniart or Claude-Nicolas Ledoux debated. It now stands in the grounds of the Moulin de Mistou and was listed as a monument historique on 26 July 1988.