Manhattanhenge is a visually stunning event that attracts thousands of spectators to New York City's streets. The influx of people can lead to crowded sidewalks and potential traffic disruptions, particularly on major cross streets like 42nd Street. Photographers and onlookers should exercise caution when gathering near busy intersections to avoid accidents. Weather conditions, including cloud cover, haze, or pollution, may impact visibility, reducing the clarity of the sunset alignment. Those planning to attend should be prepared for large crowds and arrive early to secure a good viewing spot. The event is not associated with any direct physical risks but requires awareness of surroundings due to the high volume of attendees.