Monopoles are more expensive to build than lattice towers and guyed masts, and they are more difficult for workers to climb. Some of the monopoles in my town have the antennas mounted directly to ...

Just a year later the Empire State Building became the tallest in the world at 1454 feet, including the spire. In 1957 an antenna was added that increased the Eiffel Tower’s height by 67 feet ...

By comparison, the tallest building in the United States, the Willis Tower in Chicago, stands at 1,451 feet, although counting its antenna towers it rises to 1,729 feet. The tower will be 170 metres ...