Originally, in the mid-17th century, farmers and their families of the then West End of Watertown, gathered on this spot on Sunday mornings.

It was "a rough hewn structure built of logs" with a "hard dirt floor and wooden benches."

The church foundation and exterior was built of fieldstone with ashlar cut limestone dressing, boulder walling, and patterned shingles.

The church has a complex slate and shingle ridge roof complement the front and side gable ends and half-timber stone walling.

The church features stained glass windows crafted by Louis Comfort Tiffany (west end) and Charles Jay Connick (on the east apse, from a chapel in Manchester-by-the-Sea).