Built from Portland stone, Bush House was in 1929 declared the "most expensive building in the world", having cost around £2,000,000 ($10,000,000).
布什大厦用波特兰石砌筑，于1929年被称为「世界上最昂贵的建筑」，，造价约2,000,000英镑（10,000,000美元）。