The buildings that started to be constructed, in the early 20th century, in the US, were developed to the sky. It began a competition that involved many companies, builders, engineers and architects. In this way the buildings became taller and taller. The second industrial revolution, with its inventions, fostered the building of towers in the island of Manhattan, in New York. This constructions gained the height of hundreds ft.
The evolution of the technique
As it happens in every other sector, even the techniques of architecture have evolved in time. This evolution includes a renewed style of the buildings and, the materials used to contruct them, made possible to create breathtakingly beautiful, higher and more resistent towers. Today skyscrapers are mainly made of steel and glass instead of bricks. In the end, in the today's era, the light coming from these towers contribute to beautify the skyline of many cities in the world, in particular, by night.
The World Record
With its 2,722 ft. (829.8 m) and its 164 floors the Burj Khalifa is the tallest structure in the world. It's situated in Dubai and it's became the symbol of the city. The construction of this tower costed 1,5 billion of USD and took 6 years (from 2004 to 2010). Mainly made of glass, steel and aluminium it make the skyline of its city one of the most beautiful in the entire world and it allows to view the surrounding panorama thanks to its 27 different terraces.
The evolution of the techniques interested every structure and not only the high height ones. The newest houses have a futuristic and elegant design characterized from polygonal shapes.