GARDENS OPEN Creevagh House A mature garden set in 2½ acres of woodland, surrounding a Georgian house c1780 (not open). More gardens to visit ALL GARDENS Brook Hall Estate & Gardens Brook Hall Estate and Gardens is a eighteenth century demesne, home to one of the finest private arboretums in the north west of Ireland with unique collections of conifers, rhododendrons, magnolias and camellias. VISIT