Formerly the Sears Tower, the Willis Tower is a 110-story building in downtown Chicago. The structure is made up of 76,000 tons of steel and weighs 222,500 tons.
Beijing National Stadium
The Beijing National Stadium, known as the ‘Bird’s Nest’, is the world’s largest steel structure. The construction of the 91,000-seat stadium included the use of 26km of unwrapped steel.
The Eiffel Tower, one of the 7 Wonders of the World, weighs over 10,000 tonnes. 2,500,000 rivets were used to join its 18,000 metallic pieces.
Building the Brooklyn Bridge required 600 workers and cost $15 million to complete at the time. It was the first bridge suspension bridge to use steel for its cable wire.
Sydney Harbour Bridge
Known as the ‘Coathanger’, the Sydney Harbour Bridge is the world’s largest steel arch bridge. 53,000 tonnes of steel and 6,000,000 rivets were used in its construction.
Shun Hing Square
At 384 metres to the tip, the Shun Hing Square is China’s tallest steel skyscraper. 24,500 tonnes of steel were used in its construction.
The Gateway Arch
The 630-ft catenary arch is the world’s second tallest freestanding monument.