• The Grand Staircase was the heart of Titanic's first-class section. It spanned seven decks and was topped with an elaborate glass dome that flooded the interior with natural light during the day. The staircase was not just a functional space—it was designed to evoke the feeling of an opulent hotel lobby.

• Its centerpiece, the clock called "Honour and Glory Crowning Time," featured cherubs and intricate carvings. Despite numerous expeditions to the wreck, the clock has never been found, leaving its fate as one of Titanic's many mysteries.