Northern Ireland The Cathedral Quarter in Belfast Belfast Castle Giants Causeway Hezlett House Co. Derry, Northern Ireland Belfast City Hall Magnificent Causeway Coast The Cathedral Quarter, Belfast Demesne Architecture Cannon’s along the City Walls of Derry The Peace Bridge in Derry Guildhall in Derry, Northern Ireland Carrick-a-Rede Titanic Belfast. Harland & Wolff Shipyards. Northern Ireland