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The present London Bridge is a pre-stressed concrete box girder bridge.
There were a number of materials used to build the Big Ben Tower in London. These include a copper and tin alloy, limestone, a well as iron spire.
Concrete, glass, wood and steel were used to build the Calgary tower.
The Eiffel Tower Was Made Entirely Out Of Metal
iron and wood
Stone and steel.
glass and concrete
drywall
steel and glass
This is the materials from the CN Tower,Concret shaft,a hexagonal core with three curved support arms.
11,000
To protect London from invaders.