Jordan's Castle

Jordan's Castle, known in Irish as Caisleán MacSiurtain and in Ulster Scots as Joardan's Kessel, is a historic tower house located in the town of Ardglass, County Down, Northern Ireland. Situated prominently at the junction of Kildare and Quay Streets, the structure commands a strategic view over the local harbour. While the exact original construction date is not explicitly detailed in the provided text, the castle is renowned for its elegant design, which the Dublin Penny Journal of 1833 described as superior in style to neighboring fortresses like King's Castle. Architecturally, it features a north-west tower with an entrance leading to a spiral stairway that ascends to the roof level, where it is protected by a machicolation, highlighting its defensive capabilities.

The site holds significant historical importance due to the gallant defense mounted by its owner, Simon Jordan, during the Tyrone Rebellion. Jordan successfully held the fortress for three years against besieging forces until he was relieved by Lord Deputy Mountjoy on June 17, 1601, an act of loyalty that earned him rewards from both the Queen and the Lord Deputy. Later, in the early twentieth century, the castle was renamed "Castle Seán" by Francis Joseph Bigger to honor the period when the chieftain Shane O'Neill controlled Ardglass following his victory at the Battle of Glentaisie in 1565. During this era, the tower served as a vibrant meeting place for artists and writers involved in the Irish Cultural Revival.

Currently, Jordan's Castle is designated as a State Care Historic Monument under the management of the Newry, Mourne and Down District Council. Although it once housed collections related to the cultural revival, these contents have since been dispersed to the Ulster Museum, and the tower is no longer open to the public. Today, visitors can view the exterior of the stone structure and observe a cannon situated in front of the castle, which was recovered from a French ship wrecked off the Ardglass coast while attempting to supply guns to the United Irishmen. The building remains a protected landmark representing centuries of military and cultural history in the region.