Answer
In the 1955 romantic comedy "The Seven Year Itch," Marilyn Monroe's iconic scene occurs as she stands over a subway grate on Lexington Avenue and 52nd Street in New York City. The film's protagonist, played by Tom Ewell, is captivated by the sight as her skirt billows upwards due to a passing subway train's gust of air, creating an unforgettable moment in cinematic history.