The castle was built around 1618 by Richard Burke, 4th Earl of Clanricarde.
The 1826 fire was reportedly caused by a spark from a candle left in a nursery.
The walled kitchen garden is a rare survival of an original 17th-century design, featuring an intricate parterre layout.
The castle structure uses a 'H-plan' layout, which was an architectural innovation in Ireland during the early 1600s.
The building features distinctive tall, narrow windows framed in limestone.
The estate is located within the Portumna Forest Park, which offers access to Lough Derg.
Portumna Castle is a notable example of early 17th-century Irish architecture, featuring a mix of Renaissance and medieval defensive design. It served as the primary residence of the Earls of Clanricarde for over two centuries until a fire devastated the structure in 1826. The site includes a restored ground floor, an extensive 17th-century walled kitchen garden, and surrounding woodland trails. Visitors can explore the preserved masonry and the stark contrast between the rehabilitated interior and the ruinous upper floors. The estate grounds span significant acreage overlooking the River Shannon. It is currently managed by the Office of Public Works (OPW).
The central arched entrance framing the interior courtyard.
Prioritize walking the restored walled kitchen garden to see the seasonal produce and floral displays.
Wear sturdy walking shoes to traverse the gravel paths throughout the forest park surrounding the castle.
Check for guided tour availability at the visitor center upon arrival, as interior access may be restricted to tours.
Do not attempt to explore the upper floors of the castle, as they remain in a derelict state for safety reasons.
Closed for the winter season, typically reopening in early spring.
Respect the ruins and stay within marked paths; no climbing on masonry.
