Château de Saint-Ouen

Château de Saint-Ouen is a neoclassical building with a cubic structure, symmetrical facades, and dressed stone construction. The building features a ground floor, two upper stories, and an attic level capped by a pavilion-style roof.

King Louis XVIII signed the Declaration of Saint-Ouen here on May 2, 1814, initiating France's restoration period. This event made the site a center of political change during the early 19th century.

The dining room displays twelve columns that mimic marble, while the billiard room contains gilded decorations and marble tiles marking former gaming layouts. These details reveal how the house was designed for entertainment of a wealthy household.

The building now houses a municipal conservatory for music, theater, and dance instruction serving the local community. As a public cultural center, it operates with regular teaching programs throughout the year.

Vietnamese delegates used the château for negotiations during the 1973 Paris Peace Accords, adding diplomatic importance to its story. This connects the site with one of the major peace agreements of the 20th century.