The Church Sacré-Cœur in Blanc-Mesnil was part of the wave of construction of religious edifices carried out by the Catholic Church in order to christianize the area called la “Banlieue Rouge” . Two years later, Saint-Charles church was constructed in the same commune for the same reasons.
Built in 1930, Sacré-Cœur church was constructed at the corner of avenues Clémenceau and Gallieni in order to serve the parish at the garden-city of avenue Jean-Bouin and the residential area in the south of the commune. This garden-city, the first in the new country, consists of thirty-six individual pavilions located on either side of the main road which, originally, led to Jean-Bouin Stadium. Completed in 1933 under the direction of the architect Caignard de Mailly, it propelled into the town a working-class population to be christianised . Sacré-Cœur Church is made of brick and concrete. The architect knew remarkably well how to take advantage of the bricks which became the unique decoration of the facade, apart from the sculpted tympanum representing the Sacred Heart of Jesus.