Follow the rivulet that flows through the green field on which the farm sits. A few hundred yards down the burn is the ancient well of St. Peter: the rivulet is known as St. Peter’s Burn.
Long, long ago Houston was called Kilpeter, i.e., “Cella Petris,” the tutelary saint whose dim memory is preserved in the nomenclature of the well and burn. This is one of the few Scottish Holy Wells enclosed in a built shrine: it is the only canopied holy well in the West of Scotland. The more revered wells were covered with stone, The structure is 5 feet 4 inches long and 4 feet broad, somewhat disjointed and obviously neglected and uncared for. These holy wells are very ancient. They are coeval with the dawn of Christianity in Scotland, springs whose curative qualities were venerated by the pagan villagers, and they mark the spot where the people assembled to hear the preacher of a new faith who consecrated the eternally flowing spring to the Holy Cross.
You can enter the field through the gate and have a look at the well. Wellies are recommended if you want to look inside the well as the cows have churned up the mud in front of it. please ensure you close the gate behind you.