Penrhys (Welsh: Pen-rhys) is a village in the county borough of Rhondda Cynon Taff, Wales, situated on a hillside overlooking both valleys of Rhondda Fawr and Rhondda Fach. It is situated around 1,100 ft above sea level and is a district of Tylorstown. Until the late 16th century, Penrhys was one of the holiest sites for Christian pilgrims in Wales.

The site of Penrhys has a rich religious history dating back to medieval times, though few settlements other than farmsteads can be traced to the area. Penrhys is significant for a medieval monastery, the holy shrine of "Our Lady" built at the holy spring of Ffynon Mair. During the early 16th century the antiquarian John Leland wrote during his visit to the area that he saw "Penrise Village, where the Pilgrimage was", suggesting that a settlement had built up in the area. In 1538 the shrine was destroyed during the English Reformation, and the area appeared to fall into decline. With the arrival of industrialisation in the Rhondda Valley during the 19th century interest in the religious history of Penrhys increased. An archaeological dig at the old chapel was carried out in 1912 and a new statue of the Virgin Mary was unveiled in 1953. In February 1927 the first burial took place at Penrhys cemetery.

Modern Penrhys
The village of Penrhys that exists today was first developed in 1966 as a new modern council housing development. When it was officially opened in 1968, it consisted of 951 houses, at the time the largest public-sector housing venture in Wales.

Due to many negative factors and social issues during the 1970s and 1980s the village gained a poor reputation and was seen by many as an undesirable location. In an attempt to rejuvenate the village, the Priority Estate Programme was undertaken in the late 1980s with all houses refurbished and environmental improvements made throughout the community. This, though, proved unsuccessful as the reputation of Penrhys was so low that new occupants could not be found; this lead to newly refurbished houses being vandalised as they stood empty. This in turn fueled the area's negative reputation.

By the 1990s the local authorities had began a relocation program for Penrhys, with many buildings demolished once the tenants had been removed. As the village reduced in size local amenities could no longer survive, leading to the closure of the local pharmacy and shop. By the early 21st century much of the village had been demolished, leaving around 300 buildings remaining.

Historic buildings and religious sites
Medieval monastery
Many legends surround the old monastery at Penrhys, though the historicity of most has now been dismissed. It was originally believed that the monastery was Franciscan and built under the orders of Henry I; another tale states that Welsh king Rhys ap Tewdwr was beheaded by the Normans at the site. Both these tales have been disproven, though many books hold these tales as fact. The village even takes its name from one of the legends as it was originally called Pen-Rhys ap Tewdwr (the head of Rhys ap Tewdwr). Surviving documents refer to the site as a 'manor' belonging to Cistercian Abbey of Llantarnam in Gwent. The manor may have originally been an outlying sheep farm or grange, but by the 15th century had become a place of pilgrimage. The manor consisted of three large buildings, a well, chapel and hostelry; the hostelry probably created as a service and commercial undertaking to accommodate the pilgrims.

Ffynnon Fair
Ffynnon Fair (also: Ffynon Mair), St. Mary's Well, is a holy well which lies on the hillside overlooking the village of Llwynypia. The well has been the focus of religious activity in Penrhys and is the oldest recorded Christian site in the Rhondda. It is recognised by some historians that the site may date back further, and could be pagan in origin. The waters from the well were believed to have the ability to cure ailments, particularly rheumatism and poor eyesight, and were reported by Rhisiart ap Rhys as:

"There are rippling waters at the top of the rock
Farewell to every ailment that desires them!
White wine runs in the rill,
That can kill pain and fatigue!"

A vaulted stone building was built around the well which, although heavily restored, still exists today. The structure over the well is entirely built of local Pennant sandstone, with one side built into the sloping hillside. The interior of the small rectangular building consists of stone benches around three walls; a cistern occupies the south wall. A niche in the north wall was said to have held a statue of Mary. The floor is paved with dressed flagstones.

The Shrine of "Our Lady"
Legend tells that a statue of the Virgin Mary appeared in the branches of an oak tree near to the holy well. The statue was said to have been incredibly beautiful and a gift from heaven. Many people tried to remove the statue from the tree but it resisted all attempts to the point where 'Eight oxen could not have drawn the Image of Penrhys from its place...' The statue would only allow itself to be retrieved once the chapel and shrine were built. The original statue survived at Penrhys until 1538 when, under Henry VIII's dissolution of the monasteries, Bishop Latimer wrote to Thomas Cromwell suggesting the destruction of the shrine. With the shrine burned during the night, the statue was taken to London where it was publicly burned with other religious artifacts.

The Shrine of Our Lady was still visited throughout the following centuries with records showing devotion up until 1842; though by this date little of the original shrine survived. In the early 20th century Miss M. M. Davies of Llantrisant, a Catholic convert, supplied funds for the construction of a memorial church to be built at nearby Ferndale. She would also procure a wooden replica of the original Statue of Penrhys, which is still housed at the church. In 1936, Rev P.J. Gibbons, parish priest of the church at Ferndale revived the pilgrimages and in 1939 the Rhondda Borough Council, recognising the importance of the site, took measures to restore and protect the Holy Well. On July 2 1953, a new statue was revealed by Archbishop McGrath at the site of the old chapel. Standing on a plinth and although much larger than the original, was carved from Portland stone using the descriptions left behind in medieval Welsh poetry. More than 20,000 people attended the first pilgrimage after the erection of the new statue. Due to its religious importance, Penrhys is part of the Cistercian Way, and many people still make pious pilgrimages to the site every year.

Penrhys chapel
Penrhys chapel was originally built as part of the manor. Little remains of the building, though excavations in 1912 discovered that the chapel was made up of a nave and chancel divided by a cross-wall, with a series of buttresses on the outside of the nave. This original building was at some time destroyed or demolished and a new chapel rebuilt on the original foundations. Dressed stones and fragments of green glass discovered at the site place the chapel at no earlier than the 14th century. The site now houses the modern statue of the Virgin Mary.

Transportation
Penrhys is served by the B4512 linking it to the A4058 at Ystrad Rhondda to the west and to the A4233 and Tylorstown to the east. Penrhys has no local railway station.

Sport
Penrhys has its own golf course.