Iconic structures are architectural marvels that symbolize cultural significance and historical importance. Examples include the Eiffel Tower in Paris and the Great Wall of China, which attract millions of visitors each year, showcasing the ingenuity of human design. These structures often represent the identity of a city or nation, serving as a source of pride and inspiration. They are not only functional but also artistic, blending aesthetics with engineering. The Sydney Opera House and the Taj Mahal are prime examples of how iconic structures can embody the spirit of their respective cultures.