Petřín Lookout Tower of the Eiffel Tower. In contrast to the Eiffel Tower, Petřínská rozhledna has an octagonal, not square, cross-section. Further, it does not stand, as does the Eiffel Tower, on four columns of lattice steel. The whole area under its legs is covered with the entrance hall. A similarity between the Eiffel Tower and Petřínská rozhledna is the design of the lowest cross beams in the form of round bones. In 1889, members of the Club of Czech Tourists visited the world exposition in Paris and were inspired by the Eiffel Tower. They collected a sufficient amount of money and in
Eiffel Tower wind forces, and knew that if they were going to build the tallest structure in the world, they had to be sure it could withstand them. In an interview with the newspaper "Le Temps" published on 14 February 1887, Eiffel said: He used graphical methods to determine the strength of the tower and empirical evidence to account for the effects of wind, rather than a mathematical formula. Close examination of the tower reveals a basically exponential shape. All parts of the tower were over-designed to ensure maximum resistance to wind forces. The top half was even assumed to have no