The Protestant Church of Saintes is the city's main Reformed church, finished in 1906 and listed as a historical monument in 1998. Its design mixes Neo-Romanesque, Neo-Byzantine, and Art Nouveau details, which makes it a useful stop if you are tracing the city's religious architecture beyond the older Romanesque and medieval monuments.
It is a modest sight compared with Saintes' Roman remains and abbeys, but the building rewards a short detour for its unusual blend of styles.