Wreck of the RMS Titanic research. The stern section, which had previously received relatively little attention from explorers, was specifically targeted for analysis. The microbial colonies aboard "Titanic" were also a key focus of investigation. The second expedition, from 27 May – 12 June 2004, saw the return of Robert Ballard to "Titanic" nearly 20 years after he discovered it. The expedition spent 11 days on the wreck, carrying out high-resolution mapping using video and stereoscopic still images. 2005 saw two expeditions to the "Titanic". James Cameron returned for the third and last time to film "Last Mysteries of the Titanic". Another expedition searched for
Wreck of the RMS Titanic warning which never reached the bridge, a restaurant menu and a sample square of carpet from a First Class stateroom. RMS Titanic Inc. organizes large-scale exhibitions around the world of artifacts retrieved from the wreck site. After minor exhibitions were held in Paris and Scandinavia, the first major exhibition of recovered artifacts was held at the National Maritime Museum in 1994–95. It was hugely popular, drawing an average of 21,000 visitors a week during the year-long exhibition. Since then, RMS Titanic Inc. has established a large-scale permanent exhibition of "Titanic" artifacts at the Luxor hotel and casino in Las Vegas,