A well-designed elaborate museum that takes you through the Titanic, from its inception to the tragedy that happened in the Atlantic Ocean. My wife and I bought the tickets from Tix4Tonight and they ended up being really cheap for two tickets, and we totally had no regrets about buying them. Some interesting tidbits about the experience: your entry ticket is a boarding pass and there's an actual passenger name on it that you can check at the end whether they survived or not (I didn't. my wife lived - expected?), there are a ton of artifacts that you can look at that people have recovered, and a giant pack of ice you can touch. The experience is pretty immersive, with lots of details about the various people that would have been on the Titanic.
The experience took us a little over and hour and that was without the audio tour. There is plenty of small little segments that educate you about the artifact you're looking at and the history behind the Titanic as well as the "Big Piece" that's actually just a tiny piece of the actual ship so don't think you're missing out too much by opting out of the audio tour. I think it would be a nice addition though.
TL;DR fun exhibit on the Titanic will exceed your expectations