Gellionnen Unitarian Chapel is on Gellionen Mountain, accessible by turnnig off the main road through Trebanos, and heading uphill. It is still in operation.
Go the Gellionnen Chapel webpage.

Gosen Chapel is on the main Swansea Road through Trebanos, on the right hand side as you head towards Clydach. It remains in operation.
Go the Gosen Chapel, Trebanos webpage.

Graig Chapel is on the right as you enter Trebanos from Pontardawe. It is reported that it is no longer in use as a chapel.
Go the Graig Chapel, Trebanos webpage.

Hebron Chapel is on the main road through Clydach, on the right hand side as you head towards Ynystawe. It may now be in private hands.
Go the Hebron Chapel, Clydach webpage.

Saint Michael's Church, previously Saint Michael and All Angels, is on the main road through Trebanos, on the left hand side as you head towards Swansea.
Go the Saint Michael's Church, Trebanos webpage.