A folly is by definition an ornamental structure (although some do have a purpose). They are to be viewed as part of the scenery and were usually based on the picturesque ruins of the classical World. They are often eccentric in design or construction and there is often an element of fantasy or make believe in their construction. Some Irish follies were built as famine relief projects to provide employment.
The Bottle Tower, Churchtown. County Dublin 1742 This odd looking structure is known as The Bottle Tower or Hall’s Barn. It was commissioned by Major Hall in 1742 as a miniature replica of the Wonderful Barn [...]