Maison du Piroux à Thiers, Noble private mansion in Thiers, France.

The Maison du Piroux is an old stone and timber mansion rising in medieval Thiers. The ground floor houses shops and a visitor center, while upper levels retain original fireplaces and vaulted cellars from centuries past.

The house was built in the early 15th century and served wealthy residents living within Thiers' fortified walls. Its construction shows the transition from medieval to early modern building styles in this region.

The name Pirou derives from the Auvergne word "peirou", meaning a stone perron or platform; it was written Pyron, then Piron, Piroux, and lost its final letter in the 20th century. An old street plaque opposite still reads "place du Piroux". The building's other name, hôtel du Charriol, comes from the family that owned it for centuries.

Visitors can access the ground floor tourism office during standard opening hours for information about the town. The upper rooms open during special events and on specific days for the public to view.

The overhanging upper storey is held up by just two wooden posts, a jettied gable that gives the house its slender profile. Beneath the ground floor, cellars are cut directly into the rock, and they once connected to tunnels now walled off, part of the network of galleries under Thiers.