Church of All Saints, Cellan

All Saints' Church was built during the thirteenth or fourteenth centuries, possibly on top of a Bronze Age barrow, and is thought to have originally been dedicated to Saint Callwen. Another of its medieval features is its square-bowled font. The building has been subjected to minor changes throughout history, including several restorations. Its roof, once thatched, was replaced by slate in the seventeenth century. The presence of a medieval rood loft was recorded in 1810, but has since been removed - perhaps during the Victorian restoration of 1861–62.

The church is constructed of rubble stone and has a slate roof. It consists of a nave and chancel, both thought to date to the thirteenth or fourteenth centuries, a west bellcote by Herbert Luck North, a north vestry and south porch. Its interior has been described as "the only significant Arts and Crafts work in the county [of Ceredigion]."