"Albert C. Ledner, an architect who gave Modernism his personal, often whimsical spin, putting portholes in buildings in New York and using things like ashtrays and salvaged convent windows in unusual ways in houses in New Orleans, died on Nov. 14 in Manchester, N.H. He was 93.

His daughter, Catherine Ledner, said that Mr. Ledner, who lived in New Orleans, had been visiting his son David in New Hampshire after a trip to New York to attend the screening of a new documentary about him at the Architecture and Design Film Festival.

Mr. Ledner designed three attention-getting buildings in Manhattan in the 1960s for the National Maritime Union, brash white structures whose windows suggest the portholes of a ship. They have been derided and, in at least one case, threatened with demolition over the years, but also defended as architecturally unique and important symbols of the city’s nautical past. Though altered, all three survive, two as hotels and one as a health center."