The Eiffel Tower was conceived for the Exposition Universelle of 1889, the Paris world’s fair organized during the centennial year of the French Revolution. A government competition called for a tower 300 meters high on the Champ de Mars. Engineers Maurice Koechlin and Émile Nouguier developed the basic structural idea within Gustave Eiffel’s company, and architect Stephen Sauvestre helped refine its appearance. Eiffel championed the design, secured the concession to build it, and became so closely identified with the project that the tower took his name.

Construction began in January 1887. Factory-made iron components were prepared with great precision and assembled on site with rivets. Four massive lattice piers curved inward to meet in a single shaft, distributing wind loads while minimizing the amount of material required. Hydraulic jacks and temporary supports helped workers align the legs during the first level’s construction. Despite the height and complexity of the project, the main structure was completed in a little more than two years. The tower opened in March 1889 and became the fair’s monumental entrance.

Many prominent writers, painters, and architects had protested the design, describing it as an industrial intrusion on the historic skyline. Visitors responded differently. Nearly two million people ascended it during the exposition, using elevators that were themselves major engineering achievements. At roughly 300 meters, the tower became the world’s tallest human-made structure, surpassing the Washington Monument. Its open iron framework demonstrated the possibilities of modern metal construction and turned a functional calculation of weight and wind resistance into a new kind of public architecture.

The original concession allowed the tower to stand for twenty years, and its long-term survival was not assured. Eiffel promoted scientific work there, including experiments in meteorology, aerodynamics, and radio transmission. Wireless telegraph equipment made the structure increasingly valuable to the French military and helped prevent its dismantling. During the First World War, the tower’s radio station supported communications and intercepted enemy messages. Broadcasting, television antennas, lighting schemes, restaurants, and replacement elevators later adapted the monument to new technologies and public expectations.

The Eiffel Tower gradually moved from controversy to national emblem. It became a familiar image in posters, films, photographs, and celebrations, representing both Paris and the technological confidence of the late nineteenth century. Regular painting protects its ironwork from corrosion, while alterations are managed around the original structural system. The tower’s importance lies not simply in its height or fame. It records a moment when engineering, mass tourism, international exhibitions, communications, and modern urban identity became inseparable parts of public life.