What is the worlds largest building in volume……?
Largest volume = largest usable space = The Palace of the Parliament in BucharestBoeing Plant in Everett, Washington, United States At 13.3 million m³ (470 million cu ft), Boeing claims that its Everett Plant is the largest building in the world by volume. This claim is supported by the Guinness Book of Records. Originally, the plant encompassed 5.64 million m³ (200 million cu ft). The building is used to assemble the company’s 747, 767, 777 and 787 aircraft..