Time-lapse is one my favourite methods of watching a city. Think of it as a photographic summary; a two, six, or longer hour story of a place is captured and compressed down into a minute or two. You, the viewer, get an opportunity to see what’s going on - from the comfort of the screen on your desk, or the one in your hand.
Time-lapse is super flexible in its application: observe the flow of traffic, watch a building change its skin under variable weather, catch the ebb and flow of people through a space...
Another favoured method is slow-motion, through which 'insignificant' moments are given the time to evolve into a slow dance, that grabs the eye and makes you think.