Gellionnen Unitarian Chapel

Gellionnen Chapel is a Unitarian place of worship near Pontardawe, South Wales, United Kingdom. The chapel was first built in 1692 by Protestant dissenters, becoming Unitarian in the late 18th century. It is a member of the General Assembly of Unitarian and Free Christian Churches, the umbrella body for British Unitarians. Gellionnen Chapel is the oldest Dissenting chapel in the Swansea Valley, is one of the oldest surviving chapels in the region and is a Grade II* listed building.

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