This three-storey tower house was built with an oblong footprint and featured a projecting turret that jutted out from the main structure. Its most distinctive architectural feature was the stepped crenellations along the top; these tooth-like battlements gave the castle its characteristic defensive appearance whilst also serving as a status symbol for its medieval owners.

The castle survived for centuries as a landmark in the Adamstown area, weathering the various conflicts and changes that swept through Ireland. Historical records from the late 19th and early 20th centuries, including accounts by McDix in 1897 and Ball in 1906, document the castle when it was still standing and provide valuable descriptions of its architecture and condition. Patrick Healy’s work in 1974 also referenced the structure, by which time it had become an increasingly rare example of a medieval tower house in the Dublin region.

Unfortunately, Adamstown Castle met its end during the 1960s when it was demolished, erasing a significant piece of local heritage from the landscape. The site where it once stood is no longer visible at ground level, leaving only historical records and archaeological surveys to tell its story. This compiled information, uploaded to historical databases by researcher Geraldine Stout in August 2011, ensures that whilst the physical structure is gone, the memory of Adamstown Castle remains part of Ireland’s documented medieval heritage.