how often is the eiffel tower repainted

The Eiffel Tower is repainted every 7 years. This repainting cycle is crucial for preserving the tower, protecting its iron structure from corrosion caused by moisture and pollutants. Each repainting involves applying approximately 60 tons of paint in multiple layers. The process is extensive, lasting about 18 months, and includes stripping old paint, surface preparation, and applying new coats of paint to maintain its appearance and structural integrity. This regular maintenance was recommended by Gustave Eiffel himself to ensure the monument's longevity and safety. Over the years, the tower has been repainted 19 times since its construction.