The Glennyrea River flows approximately 60 metres downslope to the southwest, marking the landscape that once surrounded this lost stronghold. Though no visible traces remain above ground today, historical records paint a vivid picture of what once stood here.

The Civil Survey of 1654-6 provides valuable insights into the castle’s final years, describing ‘a castle and some thatcht houses with a Bawne about them’. A bawn was a defensive wall that enclosed and protected the castle complex, typical of Irish fortified houses during the plantation period. The survey notes that Rehill was a manor with significant legal powers, maintaining both a Court-leet and a Court-Baron; these medieval courts allowed the lord to administer justice and collect fines from tenants. Interestingly, the survey also mentions that the castle had been ‘lately repayred’, suggesting it was still considered worth maintaining in the mid-17th century.

By the time the Ordnance Survey mapped the area in 1840, the castle had vanished, leaving only a roughly square dashed outline on the map, possibly indicating the footprint of the old bawn. The 1904-05 edition shows merely a short length of hachuring, and today, the site yields no visible remains. The transformation from a fortified manor with judicial authority to an empty field speaks to the dramatic changes that swept across Ireland’s landscape in the centuries following the Cromwellian conquest.