The Flatiron Building's daring triangular wedge rises like a ship's prow at the intersection of Fifth Avenue and Broadway. Built in 1902 with Beaux-Arts limestone and terracotta detailing, this 22-story steel-frame icon remains one of the city's most photographed landmarks. Snap your shot from Madison Square Park or the pedestrian plaza, then soak up the neighborhood energy that takes its name from this architectural marvel.