The 25,000-square-foot (2,300-square-metre) exhibit is the home of the "Big Piece" of the hull retrieved in 1998 and features conserved items including luggage, Titanic's whistles, floor tiles and an unopened bottle of champagne.[166] The exhibit includes a full-scale replica of the ship's Grand Staircase and part of the Promenade Deck, and even a mock-up of the iceberg. It also runs a travelling exhibition called Titanic: The Artifact Exhibition which has opened in various cities around the world and has been seen by over 20 million people. The exhibition typically runs for six to nine months featuring a combination of artefacts, reconstructions and displays of the ship, her passengers and crew and the disaster itself.