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The Sainte-Marie-Madeleine church was built in the 19th century in a neo-Gothic style by Aristide Tourneux, an architect from Castelgiron. With a touch of humor, the town's priest in 1912 wanted to give "cats to the girons": Arthur Regnault, a sculptor, therefore sculpted cats at the four corners of the bell tower. Having collapsed in 1998 following a severe storm, the bell tower was rebuilt identically in 2000.

Church attested in the 12th century. Nave flanked by a north aisle, built between 1540 and 1549 (date of consecration by the bishop of Rennes), and by a south aisle, built between 1603 and 1605 (dates inscribed). Inscription on the south door: ESTANT NOBLE ET DISCRET PRESTRE : RENE DE L'ESPINAY RECTEUR DE PIRE : SIEUR DE LA GUAYE FUT CESTE EDIF : CE COMMENCE. SA (NC) TE DEUS SA (NC) TE FORTIS SA (NC) TE IMORTALIS MISERERE NOBIS SA (NC) TE PETRE ORA P (RO) NOBIS : TOUT EST A Dieu 1603. The choir was first rebuilt in 1627, then surmounted by a dome struck by lightning in 1741, then again between 1752 and 1775, flanked by side sacristies. Bell tower at the top of the nave rebuilt in 1669. In 1874, architect Aristide Tourneux had a bay added to the north of the nave and a porch-tower surmounted by a spire built. Stained glass windows signed and dated: Claudius Lavergne 1882, and also stained glass windows from the Rault workshops and the Carmel of Le Mans. South wall of the enclosure redone in the 19th century with a monumental corner staircase.

Church built in the 15th century, from that period only the choir and the chapel to the north, which became the sacristy, currently remain. The nave and transept were rebuilt in 1851 (inscription: MR. RUPIN MAIRE ET LES PAROISSIENS 1851). The tower is dated 1859, it was built by Guyon, an entrepreneur from Vitré.

New church built from 1861 by Audrouin a hundred meters south of the old one. It was completed in 1875 with the construction of the tower.

The old church of Broons was destroyed in 1843. A new building, consecrated in 1846, was built on its site. Plans from 1839 of the church tower signed by Auguste Marchand are kept in the departmental archives.

Old church mentioned as early as 1160 and rebuilt in the 16th and 17th centuries (old tower dated 1582). The current church was entirely built to the plans of Arthur Regnault in 1904 (date and attribution by source). He uses the model of the so-called Plantagenet vaulted ceiling for the covering of the nave and aisles, but for the bell tower, he draws inspiration from Cornish bell walls. Two windows from the late 15th and 16th centuries of the old church were reused on the south side of the nave. This church, rebuilt in the Breton flamboyant style, is representative of the architect's style during this period.

The bell tower is visible from afar and has long dominated the town and its surroundings. The Saint-Pierre church has retained its impact on the local landscape for over a century. It was indeed in 1888 that the Fabrique Council decided to entrust Arthur Régnault, the diocese's architect, with the project for a new construction. His plan was accepted and work began in October 1889, before the blessing of the first stone on March 13, 1890. As an anecdote, the stones are extracted from the quarry of La Bouëxière. Quickly, the inhabitants discovered its citadel-like appearance, Arthur Régnault having wanted to honor the city of Châteaubourg which had not had a castle for a long time! The structural work was completed on March 28, 1893, but due to lack of funds, the bells would wait until 1894. The work on the woodwork and the construction of the high altar took place in 1911, the church being due to host the important Eucharistic congress of 1913. Maintenance work continued over the years, the church having become the property of the municipality since 1905. During the bombings of the summer of 1944, the church was spared. The inhabitants would not forget it: on May 9, 1945, the day after the armistice, the men carried Notre Dame de Boulogne in procession and paraded barefoot through the streets. The centenary was celebrated in 1992 with the decision to install the current organ. The church of Châteaubourg has thus traversed local history from the 15th century – the date of construction of the previous, much smaller church – to that designed by Arthur Régnault.

The sacristy and tower of the current church were built in 1628 and 1632. A chapel was dedicated to Saint Nicholas in 1643. As for the nave, it dates from 1856. It contains a carved wooden altarpiece, bearing the coat of arms of Brignon, one of the church's financiers.