This exceptionally fine late medieval parish church was probably built with money raised from pilgrims visiting St Dyfnog's holy well.
With stunning views of the Vale of Clwyd farmlands, St Marcella's is still the perfect place for calm and quiet meditation and has remained a sacred place.
The whitewashed stone church here today dates back to the 15th century with a stunning hammer beam roof, carved frieze and huge perpendicular windows. The south chancel was once the private chapel of the powerful Salusbury family and has a splendid painted alabaster monument to Sir John Salusbury and his wife, Jane (née Myddleton).
Around the church are a number of monuments. One to Sir Humphrey Llwyd of Foxhall, known as the Father of Modern Geography. The fine Myddleton brass, commemorates Sir Richard Myddleton of Galch Hill, governor of Denbigh Castle and his family. The funeral hatchments collection is one of the finest to be seen in the diocese. The church tower is a relic of the 13th century and is of three stages with an embattled parapet.
The tomb of the famous Welsh poet and writer, Thomas Edwards (Twm o'r Nant), 'the Cambrian Shakespeare' in located in the Green Flag awarded churchyard.