Leaning houses and concentric canals
Amsterdam is a beautiful city with very interesting history and lots to do and see. The city is organized in concentric streets, what makes places more close to each other than they should be in regular cartesian cities. The city centre has chaotic transit and is crowded with marijuana, other drugs and the sex industry, and all those things get annoying really fast. But as soon as you walk a little farther from the touristic centre (Red Light District and the Dam), it shows itself a cozy city!
Insider Tip:Walk off the city centre. There is plenty to see other than the Red Light and the streets become less crowded, with no more stores of drugs and sex. It is incredible how these industries are sponsored by tourism! Amsterdam has much more to offer, and all is just a walk far. Go to the NEMO Science Center or to the Bibliotheek (6 floors high and you can see the entire city from the last one). The I AMsterdam sign near the port is not there anymore! Go near the Van Gogh Museum to find the other one.