The Old Kirk of Peathill, now a ruin, was built around 1632 by Alexander, First Lord Forbes of Pitsligo, in a fit of pique after he heard the Minister of the neighbouring parish, preach a ranting sermon referring to 'the three pits of hell, Pitsligo, Pittulie and Pittendrum. It contains the Forbes of Pitsligo burial vault and the remains of the Jacobite 4th Lord Forbes Pitsligo who was outlawed for his part in the '45 and spent the rest of his life in hiding until dying in 1762.

 The magnificently carved birdcage bellcote which was erected as the 1st Lord Pitsligo lay dying in nearby Pitsligo Castle. The stones were imported from Holland as an early 'flatpack' and Lord Pitsligo allegedly had the bellcote assembled in the courtyard of the castle so that he could see it from his deathbed.

 The wondrous Forbes Loft, generally accepted to be one of Europe's best examples of 17th century woodcarving, was re-erected in the new church. The pew was originally situated in the Pitsligo aisle of the old church and raised about 1.5 metres above the nave of the church by the burial vault below. The loft has elaborate carved panels bearing the monograms and arms of the Forbes family and their allies the Keiths and is surmounted by a richly carved canopy. The loft surrounded the laird's family by reminders of their station in life and elevated them above the level of lesser mortals in the body of the kirk.

 The kirkyard has many fine, ghoulish mortality symbols on the tombstones, including death bells, winged souls, deaths heads, hour glasses, crossed long bones and skulls.