The Western Catholic Church(Xi Tang), located on the southern side of Xizhimen Neidajie, is the youngest church among the four churches(North, Eastern, Southern church).

The Western Church was first established in 1723 and restored in 1912. Because of a pharmacy factory beside the place of worship, it nearly cannot be seen from the street. But delicate Collins pillars and Gothic peaked arches inside the church make it grand, elegant and solemn.