You may find these websites useful
 

Tourism
Tourism Ireland

Northern Ireland Tourist Board

Armagh & Down

Belfast City

Bangor
Bangor goes Global

Bangor shopping directory

North Down Borough Council

Leisure
Waterfront Hall

Odyssey Arena

Grand Opera House

Ulster Folk and Transport Museum

Travel
Belfast International Airport

Belfast City Airport

Dublin Airport

Belfast Sea Port

Larne Sea Port

Norse Merchant Ferries (Liverpool – Belfast; Liverpool - Dublin,)

P & O (Cairnryan – Larne; Liverpool – Dublin; Fleetwood – Larne)

Stena Line (Stranraer – Belfast; Fishguard – Roslaire; Holyhead – Dublin; Holyhead – Dunlaoghaire)