Rostellan Wood, a forestry amenity managed by Coillte, lies on Rostellan promontory.[6] Rostellan Wood contains the ruins of an 18th-century folly and the remains of a megalithic portal tomb.[7][8] This portal tomb, known as Rostellan Dolmen, stands in a tidal section of Saleen Creek, and comprises a large capstone and three upright stones (with two of the uprights acting as supporting orthostats to the capstone).[7][9] The folly, "Siddons Tower", was built in the 1770s by Murrough O'Brien, 1st Marquess of Thomond on the grounds of his estate.[10] O'Brien, then 5th Earl of Inchiquin, so "greatly admired" the Welsh-born English actress Sarah Siddons (who reputedly visited Rostellan) that he built and named the tower in her honour on the Rostellan Castle demesne.[11][12]
Originally associated with the FitzGerald family, the O'Brien (Inchiquin) estate at Rostellan spanned the entire townland, and its manor house was Rostellan Castle.[13] In A Topographical Dictionary of Ireland, published by Samuel Lewis in 1837, Rostellan Castle is described as an "elegant mansion", with its "highly cultivated and extensive demesne" spanning one-third of the parish.[14] While some ruined and standing structures of the estate remain (including a large set of gates in Rostellan village),[15] Rostellan Castle itself was demolished in 1944.[16][17]
Aghada GAA club, founded in 1885, has its main sports ground on Rostellan promontory.[18]
^Bence-Jones, Mark (1978). Burke's Guide to Country Houses: Volume 1 – Ireland. Burke's. p. 248. ISBN9780850110265. the 1st Marquess built a tower in honour of Mrs [Sarah] Siddons, whom he entertained here
^McCarthy, Kieran (2019). The Little Book of Cork Harbour. History Press. ISBN9780750989602. The Earl of Inchiquin greatly admired her [Sarah Siddons] and built a tower in her honour in his grounds
^"Rostellan". Landed Estates Database. NUI Galway. Retrieved 20 December 2020.
^Archaeological Inventory of County Cork. Volume 2: East and South Cork. Dublin: Stationery Office. 1994. CO088-024---- [..] Castle [..] Townland: Rostellan [..] No visible surface trace of Fitzgerald Castle, which was rebuilt as a large house "some time ante 1750, probably by the 4th Earl of Inchiquin" (Bence-Jones 1978, 248). The house was demolished in 1944