19. The Flatiron Building (1902)
The Flatiron Building is instantly recognizable for its unique triangular shape, a marvel of steel-frame construction that marked it as one of New York’s first true skyscrapers. This architectural icon quickly became a symbol of the city’s relentless innovation and bold spirit. Its striking presence remains a beloved highlight of Manhattan’s skyline. Explore its fascinating story at Flatiron Building History.
