On the inland side, sheltered and facing south, is an entirely different world. Without heavy frosts and washed by the Gulf Stream, exotic plants thrive. Groves of Gunnera, camellia and rhododendron flourish under the Killarney oaks and Monterey pine. A Persian Ironwood tree crowns the formal parterre of clipped yew and behind it, the meadowy hill lights up in spring with a thousand pale yellow daffodils.
In the 19th century walled garden, espaliered fruit trees border the asparagus and artichoke beds. Two wooden gothic temples: one deep in the spectacular herbaceous border; the other looking out east along the Shannon, afford quiet contemplation.