The GPIB Immanuel church sits in the small grid of streets known as Depok Lama, near the old centre south of the railway. The current building is a 19th-century rebuilding of an earlier 1714 structure, in plain colonial-Protestant style: white walls, a simple bell tower, dark wood pews inside.
The interest is mostly historical: this is one of the very few visible reminders of the Twelve Families community founded by Cornelis Chastelein after he freed his slaves in 1714. The graveyard alongside contains many of their descendants. Services are still held in Dutch and Indonesian. Visitors are welcome outside service times — knock on the parsonage door.