One of the Eiffel Tower's four "legs." Each leg was made up of four iron box girders that were joined by lattice girders to form a skeletal tube roughly 50 feet square in section. The box girders were built on enormous masonry piers and were slanted inwards at an inclination of around fifty degrees to the ground. They were also hollow, which allowed rain to run off and not accumulate inside the tower.
The top of each girder was about forty-five feet above the base, and so all four together made a platform 100 feet high and resting on steel beams called "trusses." On these trusses were fastened the metal netting that formed the Eiffel Tower's dome. The entire structure was then covered with sheets of copper, which provided insulation from heat and cold as well as protection from the elements.
The Eiffel Tower was designed by French engineer Gustave Eiffel and it is his design that gives the structure its name. It was built for the World's Fair in Paris (which later became known as the Exposition Universelle) and it was opened by President MacMahon on April 13, 1889. The Tower was an immediate success and soon after opening thousands of people visited every day to see it. However, problems began to arise when some of the iron girders were found to be rusting after only five years instead of the expected ten.
The Eiffel Tower's forms The geometric form of the Eiffel Tower is extremely close to that of a four-sided pyramid. There are four enormous half-circles at the tower's base, one on each side. Hundreds of triangles and parallelograms may be seen throughout the construction. The railings are likewise perfectly rectangular. The height of the Eiffel Tower is 45 meters (148 feet).
The exterior of the Eiffel Tower is made of iron. It was designed by Gustave Eiffel and built in France between 1887 and 1889 for the World's Fair in Paris. The tower is named after its inventor, Gustave Eiffel.
Inside the base there are four large rooms with columns supporting the elevator shafts. The elevator itself is an open cage composed of aluminum beams and steel cables running from the top of the tower to a platform at the bottom. In case of emergency, it can be opened from the inside by pulling a cord next to the door.
The highest point of the Eiffel Tower is located at the top of the antenna. From here, visitors have a magnificent view of Paris city center, including the Opera House and Notre Dame Cathedral.
The restaurant on top of the Eiffel Tower is called "Top of the World". It is not included in the entry fee and has very expensive prices. However, it offers views like no other of Paris, including night time lights displays.
There are two Eiffel Towers. The original was built in 1889 for the World's Fair in Paris and is located on the Champ de Mars. It has become an iconic symbol of France and attracts more than 10 million visitors a year. The second Eiffel Tower was built in 1930 as a temporary measure for the International Exhibition in Paris and it remains one of the most recognizable landmarks in France. It is more than 450 feet tall and contains an elevator that takes passengers to the top, where they can get a view over Paris.
The Eiffel Tower is a monument to the technology of its time and the work of its designers, Gustave Eiffel and Alexandre-Gustave Eiffel. It was intended to be a new type of tower: one with a steel frame instead of masonry like the earlier Gothic towers or the stone towers of the Renaissance. The idea came from Gustave Eiffel, who had been impressed by the iron frames of bridges and buildings at the Paris World's Fair in 1878. He proposed building such a frame for a tower and received permission to try it out by jury resolution. The first tower was completed in 1889 for the Paris Exposition Universelle.
The Framework There are several triangles in the Eiffel Tower. The triangle design provides strength to the tower since it is a powerful shape to build atop without being structurally weak. The base of the Eiffel Tower is actually made up of three identical squares that meet at each corner, forming a triangular structure when put together.
The designer of the Eiffel Tower, Gustave Eiffel, was inspired by the work of Richard Morris Hunt who designed the Metropolitan Museum of Art in New York City. The Met Museum is actually built around an existing collection of art and archaeology so it makes sense that Hunt's work would influence the design of France's new landmark building.
Also worth mentioning is that the Eiffel Tower is not really shaped like a triangle; rather, it's constructed with triangular steel beams that form the basis for its design. The actual structure of the Eiffel Tower comes in three different sizes of triangles but they're all based on the same principle of strong, light construction.
Looking at pictures of the Eiffel Tower before it was completed for decoration purposes only, it seems like a simple triangle. But once the structure was complete and started rising into the sky, it became clear that this elegant piece of architecture was much more complex than what first appeared.