County Carlow in the context of "River Barrow"

Bluestone is a cultural or commercial name for a number of natural dimension or building stone varieties, including:

• basalt in Victoria, Australia, and in New Zealand
• dolerites in Tasmania, Australia; and in Britain (including Stonehenge)
• feldspathic sandstone in the US and Canada
• limestone in the Shenandoah Valley in the US, from the Hainaut quarries in Soignies, Belgium, and from quarries in County Carlow, County Galway and County Kilkenny in Ireland
• slate in South Australia

It is unrelated to human-made blue brick.

The Irish Rebellion of 1798 (Irish: Éirí Amach 1798; Ulster Scots: The Turn Out, The Hurries) was a popular insurrection against the British Crown in what was then the separate, but subordinate, Kingdom of Ireland. The main organising force was the Society of United Irishmen. First formed in Belfast by Presbyterians opposed to the landed Anglican establishment, the Society, despairing of reform, sought to secure a republic through a revolutionary union with the country's Catholic majority. The grievances of a rack-rented tenantry drove recruitment.

While assistance was being sought from the French Republic and from democratic militants in Britain, martial-law seizures and arrests forced the conspirators into the open. Beginning in late May 1798, there were a series of uncoordinated risings: in the counties of Carlow and Wexford in the southeast where the rebels met with some success; in the north around Belfast in counties Antrim and Down; and closer to the capital, Dublin, in counties Meath and Kildare.

The Three Sisters (Irish: An Triúr Deirfiúr) are three rivers in Ireland: the River Barrow, the River Nore and the River Suir. The Suir and Nore rise in the same mountainous area in County Tipperary, near the Devil's Bit, while the Barrow rises in the Slieve Bloom Mountains in County Laois. The Nore flows into the Barrow about 17 km before the Suir and Barrow join to form an estuary called Waterford Harbour east of the city of Waterford. The rivers fan out to drain a large portion of the southern part of the island, including Counties Tipperary, Carlow, Kilkenny, Wexford and Waterford, among others.

The lengths of the three rivers of the Three Sisters are the Barrow - 192 km (119 mi), the Suir - 185 km (115 mi) and the Nore - 140 km (87 mi).

The River Slaney (/ˈsleɪniː/; Irish: An tSláine) is a large river in the southeast of Ireland. It rises on Lugnaquilla Mountain in the western Wicklow Mountains and flows west and then south through counties Wicklow, Carlow and Wexford for 117.5 km (73 mi), before entering St George's Channel in the Irish Sea at Wexford town. The estuary of the Slaney is wide and shallow and is known as Wexford Harbour. The catchment area of the River Slaney is 1,762 km. The long-term average flow rate of the River Slaney is 37.4m/s

Towns that the Slaney runs through include Stratford-on-Slaney, Baltinglass, Tullow, Bunclody, Enniscorthy and Wexford. The river is crossed by 32 road bridges and one railway bridge.

The Wicklow Mountains (Irish: Sléibhte Chill Mhantáin, archaic: Cualu) form the largest continuous upland area in Ireland. They occupy the whole centre of County Wicklow and stretch outside its borders into the counties of Dublin, Wexford and Carlow. Where the mountains extend into County Dublin, they are known locally as the Dublin Mountains (Sléibhte Bhaile Átha Cliath). The highest peak is Lugnaquilla at 925 metres (3,035 feet).

The mountains are primarily composed of granite surrounded by an envelope of mica-schist and much older rocks such as quartzite. They were pushed up during the Caledonian orogeny at the start of the Devonian period and form part of the Leinster Chain, the largest continuous area of granite in Ireland and Britain. The mountains owe much of their present topography to the effects of the last ice age, which deepened the glens and created corrie and ribbon lakes. Copper and lead have been the main metals mined in the mountains and a brief gold rush occurred in the 18th century.Several major river systems have their source in the mountains, such as the Liffey, Dargle, Slaney and Avoca rivers. Powerscourt Waterfall is the second tallest in Ireland at 121 metres (397 feet). A number of these rivers have been harnessed to create reservoirs for drinking water for Dublin and its surroundings.

County Wicklow (/ˈwɪkloʊ/ WIK-loh; Irish: Contae Chill Mhantáin [ˈkɔn̪ˠt̪ˠeː ˌçiːl̠ʲ ˈwan̪ˠt̪ˠaːnʲ]) is a county in Ireland. The last of the traditional 32 counties, having been formed as late as 1606, it is part of the Eastern and Midland Region and the province of Leinster. It is bordered by the Irish Sea to the east and the counties of Wexford to the south, Carlow to the southwest, Kildare to the west, and South Dublin and Dún Laoghaire–Rathdown to the north.

Wicklow is named after its county town of Wicklow, which derives from the name Víkingaló (Old Norse for "Vikings' Meadow"). Wicklow County Council is the local authority for the county, which had a population of 155,258 at the 2022 census. Colloquially known as the "Garden of Ireland" for its scenery—which includes extensive woodlands, nature trails, beaches, and ancient ruins while allowing for a multitude of walking, hiking, and climbing options—it is the 17th largest of Ireland's 32 counties by area and the 16th largest by population. It is also the fourth largest of Leinster's 12 counties by size and the fifth largest in terms of population.

The South-East is a strategic planning area within the Southern Region in Ireland. It is a NUTS Level III statistical region of Ireland (coded IE052). It comprises the counties of Carlow, Kilkenny and Wexford and the city and county of Waterford. The South-East spans 7,198 km, 10.2% of the total area of the state and according to the 2016 census had a population of 422,062.

Carlow (/ˈkɑːrloʊ/ KAR-loh; Irish: Ceatharlach [ˈcahəɾˠl̪ˠəx]) is the county town of County Carlow, in the south-east of Ireland, 84 km (52 mi) from Dublin. At the 2022 census, it had a population of 27,351, the twelfth-largest urban center in Ireland.

The River Barrow flows through the town and forms the historic boundary between counties Laois and Carlow. However, the Local Government (Ireland) Act 1898 included the town entirely in County Carlow. The settlement of Carlow is thousands of years old and pre-dates written Irish history. The town has played a major role in Irish history, serving as the capital of the country in the 14th century. The town is in a townland and civil parish of the same name.