Londonderry, Northern Ireland, Great Britain

 Night view of Londonderry in  Northern Ireland

Card from Scott

Belfast, Northern Ireland, Great Britain

 Views of Belfast

Card from Scott

Belfast, Northern Ireland, Great Britain

 Poster of Titanic in its place of building- Belfast

Card from Monika via RR Poland gr. 226

Northern Ireland, UK

Northern Ireland (Irish: Tuaisceart Éireann, Ulster Scots: Norlin Airlann, Polish: Irlandia Północna) is one of the 4 countries of the U.K. Situated in the north-east of the island of Ireland (Eire) it shares a border with the Republic of Ireland to the south and west. Its population was 1,685,000, constituting about 30% of the island's total population and about 3% of the population of U.K. The capital and the largest city in a region is Belfast (from Irish: Béal Feirste, meaning "mouth of the sandbars"),as well as the second largest city  (over 267000 inhabitants) on the island of Ireland .
Based on: Wikipedia-21.02.2011.

 The cards from Dave.