Hill of Tara Sacred Spring, Co. Meath, Leinster, Ireland

Struell Wells, (Irish, Toibreacha an tSruthail. Ulster-Scots, Struell Waals.) [1] is a group of four holy wells that are 1.5 miles (2.4kms) east of Downpatrick County, Northern Ireland (grid reference: J5134422). [2] These wells are still used today for those seeking healing. They date back to before Saint Patrick. Struell was visited every Friday before Lammas and Mid-Summer Eve, which is St John's Eve. [3] While the earliest recorded reference to the wells can be found in 1306, no building surviving from that time is older than approximately 1600. The history of pilgrimages to this site is well documented, from the 16th to the 19th centuries.

The Struell wells were once worship sites for pagan gods, but they are strongly associated with St. Patrick. The four wells, once known throughout Europe for their ability to provide water through underground channels, are situated in a quiet valley near the ruins of an old chapel dedicated to Saint Patrick.
On the Friday before Lammas, mid-Summer's eve and on the Friday before Lammas, August 1, is Lammas Day (loafmassday), the festival of first wheat harvest. This was when hundreds of pilgrims visited Struell. While the oldest written reference to the wells can be found in 1306, none are known to have survived before 1600.
It is often associated with St. Patrick. The legend says that he came from Saul to soak in the waters. Legend has it that St. Patrick blessed the wells, and that he spent much of the night in the water singing psalms or spiritual songs. These wells almost certainly represent the fountain Slan, which is mentioned in Saint Fiacc’s hymn about St. Patrick.
Struell wells still attracts people looking for cures.