The buildings which got the largest usable space in the world is Boeing Everett Factory.The Mecca Royal Hotel Clock Tower
got the largest amount of floor area.
The Antonov An-225 Mriya (Ukrainian: Антонов Ан-225 Мрія, Dream, NATO reporting name: 'Cossack') is a strategic airlift cargo aircraft, designed by the Antonov Design Bureau in the 1980s. It is the world's heaviest aircraft.
Seawise Giant, later Happy Giant, Jahre Viking, and Knock Nevis, was a ULCC supertanker and the longest ship ever built, and possessed the greatest deadweight tonnage ever recorded. Fully laden, her displacement was 657,019 tonnes (646,642 long tons; 724,239 short tons), the heaviest ship of any kind.
The Nimitz-class super-carriers are a class of ten nuclear-powered aircraft carriers in service with the United States Navy. With an overall length of 1,092 ft (333 m) and full-load displacements of over 100,000 long tons, they are the largest capital ships in the world.
Bagger 288 constructed by German company Krupp for Rheinbraun, is the world's largest land vehicle.