Belfast, Ireland: Which City, Which Country and What to Visit?
Belfast is the capital of Northern Ireland, part of the UK (not the Republic of Ireland). Discover what that means for currency, where to arrive, and key attractions like Titanic Belfast and the Titanic Quarter.
Belfast is the capital and largest city of Northern Ireland, on the island of Ireland. It is part of the United Kingdom, not the Republic of Ireland. That distinction matters when planning a visit, particularly for currency and travel arrangements.
Belfast, Ireland: island and country are different
The city stands on the River Lagan at the head of Belfast Lough. Wikipedia’s Belfast entry describes its geography and political status. Belfast uses pounds sterling, rather than the euro used in the Republic of Ireland.

Think of the location as a two-column matrix: island and jurisdiction. Belfast belongs under Ireland in the first column and Northern Ireland, United Kingdom, in the second. This separates a geographical description from the rules relevant to your journey.
Start with maritime heritage and city landmarks
Visit Belfast lists Titanic Belfast, the Titanic Quarter and Maritime Mile among the city’s visitor areas and attractions. City Hall, the Ulster Museum, Botanic Gardens and St George’s Market offer other starting points. Choose a small group of places rather than treating the whole city as a checklist.

Check your arrival point before planning transfers
Belfast has two airports: George Best Belfast City Airport and Belfast International Airport. Ireland.com’s Belfast destination page covers arrival information and connections with Dublin. Check the airport name on your booking before arranging transport, and confirm current services and attraction opening times with the relevant operator.