New York City constantly has flashing billboards, bright windows, loud events, and people from all around the world coming all the time, all day long.
You can reread it as many times as needed to understand while listing to it the reader might not say a word right or skip parts
The subject of this sentence is "You." In English, this is considered to be an understood or inferred subject. These are generally found in imperative sentences, or a sentence that gives a command.