The Round Church was built in by Daniel Campbell of Shawfield and Islay in 1767 at a cost of £1,000. A year after the building commenced, the village of Bowmore came into being as a planned village to rehouse those of the village of Kilarrow who were not directly involved in the work of Islay Estate, mainly agricultural workers and weavers.

The two-storey circular body of the church has a main central pillar 19 inches in diameter, possibly of hemlock oak, harled and plastered. Above the coved ceiling is a radial king-post roof truss into which eight major beams are jointed. The gallery was added in 1830, increasing its capacity to 500.

The Church also contains some artifacts belonging to the Bowmore-born Rev Donald Caskie, former minister of The Scots Kirk, Paris, more famously known as the "Tartan Pimpernel" for aiding over 2,000 Allied servicemen in their escape from occupied France.