The Catholic churches of Shengtang Village are among the most unexpected sights in Guangxi. Two French missionaries built them in the late nineteenth century in Gothic brick style — pointed arches, decorative corbelling, the kind of ecclesiastical architecture designed to assert permanence and ambition in a landscape the builders found hostile. The contrast with the basalt columns and fishing boats around them is genuinely strange in the best way.
Both churches are still functioning places of worship. The larger church (the Church of the Immaculate Conception) holds regular Masses attended by the island's Catholic fishing families, whose ancestors converted under French missionary pressure in the 1870s. The smaller chapel nearby is quieter and easier to look around. Visitors are welcome, but this is an active parish, not a museum — dress modestly and don't treat it as a photo opportunity during services.