THEN1: Dominating the Rosario music room, circa 1921, is its 1,972-pipe Aeolian organ, hidden behind nonfunctional, decorative mahogany pipes. Here, visitors enjoyed daily organ concerts directed by Moran. At center above is a stained-glass depiction of Belgium’s Antwerp harbor that Moran commissioned. (Asahel Curtis, courtesy Rosario Resort & Spa)