I think a lot of church congregations in Korea meet in spaces that are not purpose-built church buildings, e.g., the floor of a commercial high-rise building. I

I think a lot of church congregations in Korea meet in spaces that are not purpose-built church buildings, e.g., the floor of a commercial high-rise building. I lived in Seoul on and off from 2004 - 2006 and one of the things I first noticed when taking the airport bus into the city from Incheon at night was how many otherwise ordinary buildings had illuminated red crosses on their roofs.