- Belfast Castle is a castle on the slopes of Cavehill Country Park in Belfast, Northern Ireland, in a prominent position 400 feet (120 m) above sea level. Its location provides unobstructed views over the City of Belfast and Belfast Lough. The current castle is a Victorian structure, built between 1867 and 1870.
The main entrance into the Belfast Castle Demesne is now where Innisfayle Park meets Downview Park West, just off the Antrim Road (part of the A6).