Following the news that construction has begun on the world's largest building in Saudi Arabia, we have rounded up 10 record-breaking structures, including the tallest, the narrowest and the heaviest.

Photo by Maurice King
Largest building: Boeing Everett Factory (1967)
Although the Mukaab in Saudi Arabia is set to become the world's largest building, the current record-holder is the Boeing Everett Factory in the USA, which was built in 1967.
With a volume of 13,400,000 cubic metres, the building was built for the construction of Boeing 747 planes and has been expanded several times since. Around 5,000 aircraft have been built at the facility.

Photo by Donaldytong
Tallest building: Burj Khalifa (2009)
Rising 828 metres above Dubai, the Burj Khalifa skyscraper became the tallest building in the world by a huge margin when it was completed in 2009. Designed by architect Adrian Smith while at SOM, the landmark structure is now the centrepiece of a large shopping development in the city's downtown area. Fifteen years after the building was completed it is still close to 200 metres taller than any other building in the world.

Photo by Polish Modern Art Foundation
Narrowest house: Keret House (2012)
The world's narrowest house is squeezed into a gap between two buildings in the centre of Warsaw. Named Keret House, the unique building was designed by Polish architect Jakub Szczesny as a temporary home for travelling writers.
Raised on stilts, the steel-framed, two-storey house ...