British Telecom Tower - Built for the Post Office in this tower is a television, radio and telecommunications tower. At the height of terrorist activity in the the revolving restaurant at the top was closed and has never re-opened.
Unseen London BIG BEN Two months after Big Ben was installed a crack appeared in the bell, caused by the use of a hammer twice the recommended weight to strike it. The repair works are still visible today.
CN Tower, Toronto is a high concrete communication and observation tower. it is the tallest free-standing structure in the Western Hemisphere, a signature icon of Toronto's skyline and a symbol of Canada
Dortmund TV Tower//La Tour Florian, est un émetteur de télévision de 219,6 mètres de hauteur, construite en 1959 à l'occasion de l'exposition fédérale horticole, elle constitue le symbole de la ville de Dortmund. Wikipédia