Map - St David's Cathedral (St. David's and the Cathedral Close)

St Davids Cathedral (Eglwys Gadeiriol Tyddewi) is situated in St Davids, Britain's smallest city, in the county of Pembrokeshire, near the most westerly point of Wales.

The monastic community was founded by Saint David, Abbot of Menevia, who died in 589. Between 645 and 1097, the community was attacked many times by raiders, including the Vikings; however it was of such note as both a religious and an intellectual centre that King Alfred summoned help from the monastic community at St Davids in rebuilding the intellectual life of the Kingdom of Wessex. Many of the bishops were murdered by raiders and marauders, including Bishop Moregenau in 999 and Bishop Abraham in 1080. The stone that marked his grave, known as the "Abraham Stone", is intricately carved with early Celtic symbols and is now on permanent display within the Cathedral Exhibition at Porth-y-Tŵr.

In 1081, William the Conqueror visited St Davids to pray, and thus recognised it as a holy and respected place. In 1089, the shrine of David was vandalised and stripped of its precious metals. In 1090, the Welsh scholar Rhigyfarch wrote his Latin Life of David, highlighting David's sanctity, thus beginning the almost cult-like status he achieved.

In 1115, with the area under Norman control, King Henry I of England appointed Bishop Bernard as Bishop of St Davids. He began to improve life within the community, and commenced construction of a new cathedral. In 1123, Pope Calixtus II granted Bishop Bernard's request to bestow a papal privilege upon St Davids, making it a centre of pilgrimage for the Western world; the Pope decreed that "Two pilgrimages to St Davids is equal to one to Rome, and three pilgrimages to one to Jerusalem". The new cathedral was quickly constructed and Bishop Bernard consecrated it in 1131. Henry II of England's visit in 1171 saw the following of David increase and the need for a larger cathedral.

The present cathedral was begun in 1181 and completed not long after. Problems beset the new building and the community in its infancy: the collapse of the new tower in 1220 and earthquake damage in 1247/48.

Under Bishop Gower (1328–1347) the cathedral was modified further, with the rood screen and the Bishops Palace intended as permanent reminders of his episcopacy; the palace is now a picturesque ruin.

In 1365, Bishop Adam Houghton and John of Gaunt began to build St Mary's College and a chantry. He later added the cloister, which connects it to the cathedral.

The episcopacy of Edward Vaughan (1509–1522) saw the building of the Holy Trinity chapel, with its fan vaulting which some say inspired the roof of King's College, Cambridge. This period also saw great developments for the nave, whose roof and Irish oak ceiling were constructed between 1530 and 1540. Bishop Barlow, unlike his predecessor as bishop, wished to suppress the following of David, and stripped St David's shrine of its jewels and confiscated the relics of St David and St Justinian in order to counteract "superstition" in 1538. In 1540, the body of Edmund Tudor, Earl of Richmond and father of Henry VII, was brought to be entombed in front of the high altar from the dissolved Greyfriars' Priory in Carmarthen.

The establishment of the Commonwealth of England under Oliver Cromwell greatly affected many cathedrals and churches, and was particularly felt in St Davids. The cathedral was all but destroyed by Cromwell's forces and the lead was stripped from the Bishops Palace roof.