The Reformed congregation, a German branch of Presbyterianism, was founded in Philadelphia in 1734 and acquired this site in the next decade. Pehr Kalm in 1750 described their original building as being of hexagonal plan like a Stockholm church. The present building reflects Quaker models in its north-facing orientation and its almost total absence of ornament on a simple brick, gable-roofed building. Converted to a paint factory and later a warehouse, it was restored by the United Church of Christ.