Reinforced concrete house built in Paris, France

Francois Coignet embedded wrought-iron, I-beams, into the concrete of the roof and the floors of a house he built in Paris, France, in 1862. Continue reading

Building Taller 1500 feet

The World Financial Center in Shanghai, China, on its planned completion date in 2001, was to be 1,507 feet (460 meters) high. Continue reading