Tokyo is well-known as a modern metropolitan city with a large population and high building density. If you really want to “feel” the crowd, I’d suggest you to go to Shibuya.
Shibuya is one of the 23 special wards in Tokyo and located at the western part of central Tokyo. According to Wikipedia, it’s not even in the Top 10 amongst all special wards in terms of both population size and density. However, the area around the JR Shibuya railway station is one of the busiest commercial and shopping districts in Tokyo – as you can see in the picture.
Now, what makes it more fascinating is the design of the motor roads in this area. Right in front of the station is a major crossing of roads going into 5 different directions. As the cars can go through the crossing in different directions, the pedestrians can only cross the road when the traffic lights turn red for all directions. The traffic there is very busy and so it’d take a while for all the traffic lights to go red. As a results, loads of pedestrians accumulate in all directions and when the pedestrian green lights finally appear, people just swarm to the crossing. As Japanese is famous for their consideration, it’s still an ordered crowd but if you are not careful, you may still get “directed” by the crowd away from your original destination.
As people walked into other streets and shops after crossing the road, the crowd slowly disappear. Then it’s the cars’ turns again and then people from railway station and shops come up to accumulate again, waiting for their turn to cross. The cycle just repeats and repeats day and night 365 days a year….