We hope you enjoy exploring, because there are countless things to put on your list. For instance, Titanic Belfast and Belfast Castle. SSE Arena, Grand Opera House and Ulster Hall are other wonderful attractions. And you won’t want to forget about Belfast Botanic Gardens! Of course, trying to cram all the best sights into your Northern Ireland getaway will be easier with a car rental. You can add some wheels to your Expedia booking after locking in your cabin.