An easy recommendation for anyone, this interactive museum is excellent even for those of you who aren't completely besotted with history - you will be once you leave.
Have a sip in the tallest bar on the island of Ireland. A niche suggestion, it's a fun fact to tell folks when you get home.
Experience Belfast from above with a birds-eye view over the city from the top of Victoria Square. The Dome also includes some interesting tidbits of information relating to your sights for a mix of facts and fun.