Church of Saint-Didier, Asfeld, Baroque church in Asfeld, France.

The Church of Saint-Didier is a brick Baroque church in Asfeld, built as a pentagonal rotunda covered by a flat dome and ringed by a colonnade with niche chapels. To the west a concave colonnade carries a three-storey domed tower, preceded by an oval porch. The red-brick walls with pale stone trim and arched windows are visible from the street.

Jean-Jacques de Mesmes, Count of Avaux, had the church rebuilt between 1680 and 1685, partly at his own expense. The plan came from a "Monsieur Fleury" and the Dominican friar François Romain of Maastricht, who had solved technical problems in rebuilding the Pont Royal in Paris. The brick church was restored in 1733, from 1865, in 1994, 2001 and 2008/09, and was classified as a monument historique on 3 May 1913.

The church is dedicated to Saint Didier, the parish saint of Asfeld. Inside, a seven-stop organ built around 1900 by Clovis Renault stands in the church, and the painter Rostislas Loukine donated an icon of Mary with the apostles Peter and Paul. The bell tower holds three swinging bells cast in 1922 by Alexandre Chambon of Montargis: Gabrielle-Lucienne (825 kg), Marie-Louise Octavie (625 kg) and Lucie-Françoise (455 kg).

The church stands in the centre of Asfeld, its brick rotunda and domed tower visible from the surrounding streets. The building is a classified monument and the parish church, so access depends on services and on restoration work; the interior was renovated in 2008 and 2009. Look for the three bells cast in 1922 by Alexandre Chambon of Montargis in the bell tower.

The plan follows the outline of a viola da gamba, as Jean-Jacques de Mesmes asked François Romain to shape the church like a musical instrument so that prayers would rise better toward heaven. The brick construction is a case unique in the region, and the building holds 138 pillars and columns.