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Origin and history

At the beginning of the 19th century, the judicial institutions of Lons-le-Saunier were dispersed: the court sat in the town hall, while the justice of peace, prisons and the gendarmerie occupied the former convent of Cordeliers. Faced with this fragmentation, the department acquired land adjacent to the wood market to build a coherent set of courthouses, prison and gendarmerie. This ambitious project was entrusted to departmental architect A. Robert, who in 1825 proposed a neo-classical building on the ground floor, inspired by Durand's models, with a central audience room.

The work, begun in 1827, was completed in 1841 for the initial part. However, the addition of the civil court proved necessary, leading to the adoption of the project of the bisontin architect Jean-Baptiste Martin. He predicted a floor on both sides of the central hall, bringing the construction to its final completion in 1846. The palace adopts a grid square plan, with four inner courtyards, and today retains most of its original arrangements, although few decorations remain. The building, owned by the department, was inscribed in the Historical Monuments by order of 12 May 1999.

This courthouse is part of a broader context of the reorganization of post-revolutionary judicial institutions, marked by a desire to centralize and modernize public facilities. Its construction reflects the architectural standards of the time, combining functionality and republican symbolism, while meeting the growing needs of structured justice. The choice of the neo-classical, sober and orderly style illustrates this dual ambition: administrative efficiency and representation of state authority.

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