Crom demesne’s 2000 acres is home to an abundance of rare flora and fauna, from ancient oak and yew trees to some of Ireland’s largest heronries, bats and the elusive pine marten. Beginning at the Visitor Centre car park are a variety of way-marked paths with gentle slopes, though they can become muddy after wet weather. The longest route takes you through parkland towards the Old Castle ruins (circa 1610), along the shoreline past the boathouse, across the White Bridge, through the woodland, and in a loop back to the White Bridge, back toward the castle, returning you to the car park. Located at the old castle are the ancient yew trees, reputed to be the oldest in Ireland. The old castle was destroyed by an accidental fire in 1689. The 19th century castle is a private residence and closed to the public.