![]() Take a look at the Ponte Maria Pia that crosses the River Douro in Porto, Portugal, and you'll see a lot of similarities. And the design of the tower has a lot in common with an arched iron bridge. That barrier is paint.Įiffel knew plenty about metal structures and how to make them long lasting - he had been building iron bridges for nearly three decades by the time the construction of the tower began. "Corrosion and fatigue are the two big things we worry about for maintenance." Luckily, corrosion, a chemical reaction requiring oxygen and moisture, is a slow process, and like steel, iron can be protected from it by a barrier. "It was built out of the only material that could have built that form at that time," says Schafer. To get it ready for the 2024 Paris Olympic Games, a $60 million (50 million euro) renovation project was launched, according to France 24. ![]() Like other great landmarks, the cost of maintaining the structure is a high one. However, the real culprit in its need for upkeep is coming from the air - the effects of oxidation, pollution and even bird poop. With all the traffic on three visitable levels today - restaurants, bars and shops - it's no surprise the Eiffel Tower requires maintenance. Today, that number is more than 6 million a year, and the structure we're referring to is, of course, the Eiffel Towel, named for its famed engineer, Gustave Eiffel. Although many important figures in the arts and literature, such as Charles Garnier and Guy de Maupassant, had protested its construction, the tower was a success, welcoming more than 2 million visitors its first year. In May 1889, the Exposition Universelle, or Paris World's Fair, introduced millions of visitors to what was called the "300-meter Tower," a large puddle iron structure at one end of the Champ de Mars. ![]() Rust is visible on a pillar of the Eiffel Tower March 8, 2021, before the 20th campaign of painting and stripping was begun, in Paris, France.
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