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Heritage classified

Key figures

Origin and history

The castle of the Sires of Oiselay, located in Frasne-le-Château (Haute-Saône), was built on the remains of an 11th century castle, now completely destroyed. The current U-shaped building consists of a round tower from the 15th century to the west and a square tower to the east. The Renaissance-style north façade was erected in 1570 for Antoine d'Oiselay, although its attribution to architect Hugues Sambin remains unproven. This castle illustrates the transition between medieval defensive architecture and Renaissance artistic influences.

In the 19th century, between 1835 and 1861, the architect Pierre Marnotte undertook important works for the Magnoncourt family, including the elevation of the facade on courtyard and interior transformations. These changes reflect the architectural tastes of the era, combining historical heritage and modern comfort. The building was partially listed as a historical monument in 1946 (former poterno and tower), and a second time in 1993 for its facades, roofs, staircases and interior decorations.

The castle embodies the local history of the Haute-Saône, marked by the influence of noble families such as the Oiselay and Magnoncourt. Its architectural evolution, from the Middle Ages to the 19th century, reflects the social and cultural changes of the region. Today, there remains a significant example of Burgundian castral heritage, combining residential functions and symbols of power throughout the centuries.

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