Question: The large-usable volume building in Hannover has how many halls ?

text: List of largest buildings
Largest usable volume
Boeing 's Everett factory seen in 2011 The Great Mosque of Mecca , known as Al-Masjid al-Haram , Mecca , Saudi Arabia . The interior of the Tropical Islands Dome in Brandenburg , housed inside the Aerium This table lists the buildings around the world with the largest usable space , sorted by volume , with a volume of at least 1,000,000 m3 ( 35,000,000 cu ft ) .
The tables in this article list buildings from around the world by usable space (volume), footprint (area), and floor space (area). Here, building refers to single structures that are suitable for continuous human occupancy. There are, however, some exceptions, including factories and warehouses. The Aerium near Berlin is the largest uninterrupted volume in the world, while Boeing's factory in Everett, Washington, United States is the world's largest building by volume. The AvtoVAZ main assembly building in Tolyatti, Russia is the largest building in area footprint. The Yiwu International Trade City in Yiwu, China is the largest building in terms of total floor area. Due to the incomplete nature of this list, buildings are not ranked.
Name Country and territory Place Floor area Volume Description
Boeing Everett Factory United States Everett , Washington 398,000 m ( 4,280,000 sq ft ) 13.3 million m ( 472 million cu ft ) Boeing 's assembly site for a selection of the company 's largest aircraft , originally built for construction of the 747
Great Mosque of Mecca Saudi Arabia Hijaz 356,000 m ( 3,830,000 sq ft ) 8 million m ( 282 million cu ft ) ( Approximate ) The largest mosque in the world and the most sacred place for Muslims also surrounds Islam 's holiest place , the Kaaba
Jean-Luc Lagardère Plant France Toulouse - Blagnac 122,500 m ( 1,319,000 sq ft ) 5.6 million m ( 199 million cu ft ) The assembly hall of the Airbus A380 , the world 's largest airliner
Aerium Germany Halbe , Brandenburg 70,000 m ( 750,000 sq ft ) 5.2 million m ( 184 million cu ft ) A hangar originally intended to house the construction of a giant airship , this building now houses an indoor theme park , called Tropical Islands Resort
Meyer Werft Dockhalle 2 Germany Papenburg , Niedersachsen 63,000 m ( 680,000 sq ft ) 4.72 million m ( 167 million cu ft ) Dry dock for construction of cruise ships
Boeing Composite Wing Center United States Everett , Washington 111,500 m ( 1,200,000 sq ft ) 3.7 million m ( 131 million cu ft ) Boeing 's assembly site for the production of composite wings for the 777-8 and 777-9
NASA Vehicle Assembly Building United States Kennedy Space Center , Florida 32,374 m ( 348,470 sq ft ) 3.66 million m ( 130 million cu ft ) Originally built to enable simultaneous assembly and shelter for four Saturn V rockets
Inex Sipoo Finland Sipoo 195,000 m ( 2,100,000 sq ft ) 3.4 million m ( 120 million cu ft ) Large grocery distribution center , completed in 2018
The O2 United Kingdom London 104,634 m ( 1,126,270 sq ft ) 2.79 million m ( 98.6 million cu ft ) Originally the Millennium Dome designed for London 's millennium celebrations and since converted into an entertainment centre
The Palace of Parliament Romania Bucharest 365,000 m² ( 3,930,000 sq ft ) 2.55 million m ( 90 million cu ft ) Heaviest building in the world , as well as the largest legislature building in the world accommodating the two houses of the Parliament of Romania : the Senate and the Chamber of Deputies , along with three museums and an international conference center
Tesco Donabate Distribution Centre Ireland Donabate , Fingal 80,194 m ( 863,200 sq ft ) 1.55 million m ( 54.83 million cu ft ) Large dry grocery distribution center near Dublin . Opened in 2007 at a cost of €70 million
Target Import Warehouse United States Savannah , Georgia 187,664 m ( 2,020,000 sq ft ) 1.5 million m ( 16.2 million cu ft ) Built to distribute imported product to internal Target distribution centers
Austal USA ( Module Manufacturing Facility ) United States Mobile , Alabama 68,250 m ( 734,600 sq ft ) 1.365 million m ( 48.204 million cu ft ) The facility is capable of constructing six large aluminium vessels such as the US Navy 's Littoral Combat Ship ( LCS ) and/or Joint High Speed Vessel ( JHSV ) per year
Hanover Fairground ( Halls 3-9 ) Germany Hannover , Niedersachsen 114,535 m 1.15 million m Largest exhibition ground in the world with 27 halls . Halls 1-2 and 10-27 are in separate adjacent buildings
National Exhibition Centre ( Halls 1-5 ) United Kingdom Birmingham , West Midlands 186,000 m 1.14 million m Large exhibition centre southeast of Birmingham . Halls 6-20 are in a separate building
2800 Polar Way United States Richland , Washington 46,929 m ( 505,140 sq ft ) 1.029 million m ( 36.241 million cu ft ) A 35-metre ( 116 ft ) tall refrigerated warehouse completed in July 2015
Hangar One United States Moffett Federal Airfield , Mountain View , California 32,375 m ( 348,480 sq ft ) 1 million m ( 35 million cu ft ) A naval airship hangar opened in 1933 as the hangar for the rigid airship USS Macon ( ZRS-5 ) . The hangar measures 345 meters ( 1,133 feet ) long , 94 meters ( 308 feet ) wide , with a peak of 60 meters ( 198 feet ) high