Built in 1564, Howth Castle is now the oldest inhabited house in Ireland. Unfortunately the building itself is closed to the public, but the rhododendron gardens in the grounds are open to the public in the summer. A barn on the grounds houses the National Transport Museum, which contains old tractors, model railways, and a horse-drawn fire engine.
Howth Castle was namechecked in James Joyce's Finnegan's Wake, and legend has it that pirate Grace O'Malley abducted the grandson of the Baron of Howth when she was refused entry to the castle to visit the Baron in 1576. read more