12 Old Ruins to Explore in County Donegal

A bronze age stone circle dates from circa 2100-700 BC. overlooks the now destroyed passage tomb complex at Kilmonaster and Beltany is dominated by Croghan Hill to the east on the summit of which there sits a Neolithic mound most likely a passage tomb. Today Beltany has 64 stones of varying height and width enclosing an earthen platform.

One of Donegal's best known castles due to its prominent location along the Derry-Letterkenny road. It was built around 1560 and was one in a network of castles around Inishowen owned by the O’Dohertys. The structure had three stories, two circular watchtowers, a small vaulted chamber, and openings for muskets. It is now one of the iconic attraction in this area.

A majestic castle built in the 16th century on a rocky promontory with spectacular views of the Donegal hills and headlands, this O’Doherty stronghold stands on the site of a pre-Viking settlement recorded in the Annals. It was strategically positioned atop a rocky outcrop defending the Ó Dochartaighs' remote Isle of Doagh in the far north of Inishowen.

The Colmcille Heritage Centre is situated on a very scenic lakeside site with walks along the lakeside. It endeavours to give an appreciation of a period in Irish and European history at the end of the Roman Empire and the beginning of the Medieval period.

This old graveyard known as the Famine Graveyard and also the Paupers Graveyard is the site of the burials of victims of the Great Irish Famine 1845-1849 and of the poor generally. There are no marked graves. There are probably hundreds of people buried here, possibly a thousand or more. It lay nearby the old Donegal Town Workhouse. A lone cross and a few plaques commemorate the burials.

Glenveagh Castle is a 19th century castellated mansion and was built between 1867 and 1873. Its construction in a remote mountain setting was inspired by the Victorian idyll of a romantic highland retreat. It is built in the Scottish baronial architectural style and consists of a four-story rectangular keep, surrounded by a garden, and a backdrop of some 165.4 km2 of mountains, lakes, glens and woods complete with a herd of red deer.

The Glenveagh Castle Gardens are part of Glenveagh National Park in the north west of County Donegal. The site occupied by the castle and gardens was formerly wild mountain moorland, with construction of the castle beginning in 1869 and the gardens in the mid 1880s. Tree rhododendrons and magnolias grace the woods with under-plantings of azaleas, hostas, astilbes and rodgersias.

A beautiful castle situated at the extreme seaward end of Inch Island. It was built in the middle of the fifteenth century but, by 1609, when granted to Sir Arthur Chichester, he stated that it was in a state of disrepair. It came to form part of the defensive network of O'Doherty fortifications designed to protect them from rival clans and to overawe those who accepted their overlordship.

The Kilclooney Dolmen is a portal-tome or dolmen, prominent on the skyline north-north-west of Ardara. It well displays the classic features from which this type of monument derives its name. The monument comprises a huge capstone approximately four by six meters, supported by two 1.8 meter uprights, known as portals and a back stone on which the capstone rests. A notable feature of the back stone is the chocking stone.

St Patrick's Purgatory is an ancient pilgrimage site on Station Island in Lough Derg, County Donegal, Ireland. According to legend, the site dates from the fifth century, when Christ showed Saint Patrick a cave, sometimes referred to as a pit or a well, on Station Island that was an entrance to Purgatory. Its importance in medieval times is clear from the fact that it is mentioned in texts from as early as 1185 and shown on maps from all over Europe as early as the fifteenth century.

Cathedral of St Eunan and St Columba as it is also known, is a cathedral in the parish of Conwal and Leck, part of the Diocese of Raphoe. Built between the years of 1890 and 1900, the cathedral is found in Letterkenny, County Donegal in Ireland. There are two cathedrals in the county; an older cathedral of the same name is found in the town of Raphoe, and since the Reformation, has been used by the Church of Ireland.