This is where the Titanic sank:
For true Titaniacs with a desire to recreate the cruise without the crash, there was a 100th anniversary cruise to the site this spring, the "Titanic Memorial Cruise." The 12-night cruise (following the Titanic's route) included lectures, demonstrations, the chance to "pamper yourself and make the most of the ship's facilities," and a memorial service at 2:20 a.m. on April 15, 2012.
You can find a close-up mapping of the undersea site on this page of the History Channel's website. The article itself begins and ends promoting a show, but the slide show with captions is pretty cool.