I think there are several factors that can make a landmark or building truly iconic and memorable. First, it should have a unique and recognizable design that stands out from the rest of the cityscape. It should also be associated with a significant historical event or person, or represent an important aspect of the city's culture or identity. Additionally, an iconic building should have some sort of special feature or quality that makes it particularly special or significant, such as being the tallest building in the city or having a particularly striking or unique design. Finally, a truly iconic building should be timeless, able to withstand the test of time and still be admired and appreciated
