The Herbert von Karajan plaza in front of the Suntory Hall, which was constructed in April 1998, is in remembrance of the maestro, who was involved in the design of the hall and who also recommended its vineyard style as used at the Berliner Philharmonie, in which the audience surrounds the concert floor in the Main Hall. He also helped with its acoustical evaluation. Suntory was designed as a compromise hybrid seating layout, having substantially fewer acoustically-inferior seats sidewards and behind the stage than Berlin Philharmonie, incorporating elements of both the arena layout and vineyard style of the Berlin Philharmonie and classical shoeboxes like Vienna Musikverein. Apparently at the time of construction a visionary modification of the Berlin Philharmonie layout, since recent acoustic research clearly recognizes the advantage of the shoebox halls over Berlin Philharmonie architect Sharoun's unique idea of placing audience all around musicians, even if it meant that many sit in the acoustical offside with weak sound, away from the preferential directions many classical instruments and singers emit sound. Architectural design was by Shoichi Sano, Yasui Architects and that of the acoustics by Minoru Nagata (Nagata Acoustics).