I have not seen so many bicycles since I was in Japan. There are bicycle lanes beside the sidewalks and when walking one has to watch out not to stray into a bicycle path. There are even special stop lights for cyclists with green and red cycle images. Trains and ferries also have special facilities for them. It is interesting and risky getting off the ferry as both cyclists and pedestrians are rushing off together on the same stretch of pavement, or cobblestone as the case may be.
Bicycles are prevalent all over the Netherlands as the land is quite flat and easy to cycle around.
There are special sheds and racks for them at railway and bus stations. I also noticed that not all of them are locked up. I am surprised at the number not locked. I remember over in Japan, that the Japanese are very honest, except in two areas of life, bicycles and umbrellas. If they were not locked up people would help themselves to them and leave them in some other part of town, or use them to get home after a night out.