The First Class Ballroom of the SS United States under each subsequent owner.
The first image comes from a brochure in the Author’s Collection, the second comes courtesy of Robert Stebbins on Facebook: https://www.facebook.com/photo.php?fbid=10237810456674744&set=p.10237810456674744&type=3 and the third comes courtesy of Jared Whalen/Billy Penn: https://billypenn.com/2015/09/23/the-story-behind-that-massive-ship-across-from-ikea-once-the-fastest-in-the-world-one-day-you-might-party-there/
The Kaiserhafen 