a view of a city at night from the top of a building

Met up with a coworker from an old job, who introduced me to his photographer buddy. Took me to the first rooftop I've ever been on ( as far as I can remember ). Staring out at the city from on top of a roof *hits* different from being inside on a very high floor. The city rooftops form the scape of the city itself, as though you could traverse across them the same you would the city streets.