Yeoksam Catholic Church is located near Yeoksam Station (line 2, exit 2) in Gangnam. Most services are offered in Korean, but they have a special mass on Sundays mornings for English speakers. The church also offers an English Bible study and confessions before and after the mass.
English Mass: Sundays, 9:30 AM
Address: 23-11 Eonju-ro 85-gil, Yeoksam 2(i)-dong, Gangnam-gu, Seoul, South Korea
To get there, take the subway to Yeoksam Station (line 2) and go out at exit 1. Walk straight and take the first on your left. Keep walking straight for a few minutes. You should see GS25 on your right, and 4 buildings later the church will be on your right.