The sham fort at Tyrella, County Down. This charming little folly stands on a rise above the main house and with views across the surrounding countryside and seascape. It is believed to date from the mid-19th century, being created to accommodate three cannon rescued after the SS Great Britain – at the time the world’s largest passenger ship – ran aground on a nearby beach in 1846 (seemingly the ship’s crew mistook the newly constructed St John’s Point Lighthouse for a lighthouse on the Isle of Man).
