This foyer staircase is a replica of the one that was on the S.S.Titanic. First photo is the $100 mil. Tranquilty estate's staircase & second photo is the original Titanic staircase.
http://www.southtahoehouses.com/images/TranquilityStaircase.jpg
http://www.sstitan.org/Portals/0/Grand_staircase.jpg
http://www.southtahoehouses.com/images/TranquilityStaircase.jpg
http://www.sstitan.org/Portals/0/Grand_staircase.jpg