- SaRang Church
- 8,418 square metre(s)
- Korea, Republic of (Seoul)
The largest underground church is the SaRang Church (South Korea), with a total floorspace of 8,418 m² (90,610 ft²), situated in Seoul, South Korea and measured on 8 December 2015.
The floorspace is spread across 7 main chapels and sanctuaries and can accommodate 9,380 seated people.