Dingle Peninsula in the context of An Triúr Deirfiúr

A promontory fort is a defensive structure located above a steep cliff, often only connected to the mainland by a small neck of land, thus using the topography to reduce the ramparts needed.

The oldest known promontory fort is Amnya I in Siberia which was established as a fortified site in the late 7th millennium BC. Although their dating is problematic, most seem to date to the Iron Age. They are mainly found in Ireland, Brittany, the Orkney Islands, the Isle of Man, Devon, the Channel Islands and Cornwall.

The Rt Hon. Arthur Grey, 14th Baron Grey de Wilton, KG (1536–1593), was a baron in the Peerage of England. Lord Grey de Wilton is now largely remembered for his memoir of his father, for participating in the last defence of Calais (1558), and for his involvement in the massacre after the Siege of Smerwick (1580) on Corca Dhuibhne in County Kerry. He served as Lord Deputy of Ireland from 1580 until 1582.

Munster Irish (endonym: Gaelainn na Mumhan, Standard Irish: Gaeilge na Mumhan) is the dialect of the Irish language spoken in the province of Munster. Gaeltacht regions in Munster are found in the Gaeltachtaí of the Dingle Peninsula in west County Kerry, in the Iveragh Peninsula in south Kerry, in Cape Clear Island off the coast of west County Cork, in Muskerry West; Cúil Aodha, Ballingeary, Ballyvourney, Kilnamartyra, and Renaree of central County Cork; and in an Rinn and an Sean Phobal in Gaeltacht na nDéise in west County Waterford.

Mount Brandon or Brandon (Irish: Cnoc Bréanainn, meaning 'Brendan's hill'), at 952 metres (3,123 ft), is one of the ten highest peaks in Ireland, being the 8th–highest peak in Ireland on the Arderin list, and the 9th–highest on the Vandeleur-Lynam list. Brandon is the highest Irish mountain outside the MacGillycuddy's Reeks range and has the greatest prominence of any Irish peak except Carrauntoohil, Ireland's highest mountain.

Mount Brandon is at the centre of a long high ridge called the Brandon Group range of mountains in the Dingle Peninsula in County Kerry. The ridge contains seven other major peaks (i.e. above 2,000 ft in height); one is the similarly named Brandon Peak (840 metres). The positioning and dimensions of the Brandon Group ridge have made it the scene of several air accidents over the years. The mountain, and range, is named after Saint Brendan, and is the end of a Christian pilgrimage trail known as Cosán na Naomh. It is also well regarded for hill walking with routes such as the 4–5-hour Faha Route (also called The Pilgrim's Path), and the 6–7-hour traverse of the entire range known as "one of the finest ridgewalks in Ireland".

Baile an Fheirtéaraigh (Irish, meaning 'Ferriter's Townland' [ˈbˠalʲ ənʲ ɛɾʲˈtʲeːɾˠiː]) unofficially anglicised as Ballyferriter, or also known as An Buailtín, is a Gaeltacht village in County Kerry, Ireland. It is in the west of the Corca Dhuibhne (Dingle) peninsula and according to the 2002 census, about 75% of the town's population speak the Irish language on a daily basis. The village is named after the Norman-Irish Feiritéar family who settled in Ard na Caithne in the late medieval period. The last Chief of the Name was the seventeenth-century Bard and leader Piaras Feiritéar who was executed. The older Irish name for the village An B[h]uailtín ('the little dairy place') is still used locally.

The village lies at the base of Croaghmarhin Hill near Cuan Ard na Caithne (formerly also called Smerwick Harbour) on the Dingle Peninsula, on the R559 regional road which loops around the west of the peninsula, beginning and ending in Dingle Town. It has three pubs and one hotel. It also has a school, church, museum, Músaem Chorca Dhuibhne, the offices of the local co-op (Comharchumann Forbartha Chorca Dhuibhne) and a Garda station.

Baile na nGall (Irish, meaning "town of the foreigners), unofficially anglicized as "Ballydavid", is a Gaeltacht village is situated on the Dingle Peninsula of County Kerry, Ireland. As the 2003 Official Languages Act revoked the status of the English language name Ballydavid, the official name is Baile na nGall.

The village is near to Gallarus Castle, a 15th-century tower built by the Knight of Kerry, the holder of a hereditary knighthood belonging to the Geraldine Dynasty. It is now an Irish heritage site and stands about one kilometre from the better known and more historically significant Gallarus Oratory.