Architecture of Co. Derry & Lost Buildings of Ireland See Also Co. Derry Random Building 1969 – Library, Coleraine, Co. Derry 1960s – Mullenan Land Boundary Post, Co. Derry Home / Buildings / Buildings of Ireland / Lost Buildings of Ireland / 1960s – Mullenan Land Boundary Post, Co. Derry Design for a border crossing Customs & Excise post for Mullenan Co. Derry. Designs for such posts were fairly standard with similar buildings being constructed in various locations. Share this:TwitterFacebookMastodonRedditPrint Related Posts Related Posts