When you tell your friends you’ve been to Amsterdam they immediately start jokes about hemp and prostitutes in the red light district. It is unfortunate this city built up such a bad reputation, because actually there are better reasons to visit it. Nowadays the red light district is more a tourist attraction than a dangerous place. At night you can see families walk there with babies and strollers, as well as crowds of Japanese elders following the guide with the flag in her hand while looking at the ladies behind windows. You immediately lose any lust or transgression will.
Amsterdam is built on canals, not so different than Venice, except that bridges in Amsterdam have no staircases and houses always have a little street between the canal and their facade. This allows Amsterdammers to easily move on a bicycle. The whole city has been developed as a series of concentric semicircular canals. While Manhattan is a Cartesian city (you identify places by street, avenue pairs, that actually work the same as x,y coordinates), Amsterdam uses a polar system (ρ,θ). You know, I’m a geek so be patient 
Put in easier words you have to think in terms of which angle you have to rotate around the Dam, and how far you are from there. By the way, New York used to be a Dutch colony and was called New Amsterdam, before being sold to the English. And moreover Harlem and Brooklyn both inherited their name from cities in The Netherlands.
