Narrow Streets, Open Minds
Amsterdam is beautiful, what's not to love: feels very European, bicycles and "coffee shops" are EVERYWHERE. The narrow streets are really neat, and the surfaced activities (prostitution, marijuana, public drinking, mushrooms) make the city much more happier and carefree. A great place to relax, and see beauty. I didn't find a lot of tourist attractions other than Anne Frank house, torture museum, but it is one of my favourite cities, if not my favourite. Absolutely beautiful.
Insider Tip:For those wanting to "see" the Red Light District, check out "Parak 118", instead. The torture museum is not that great, also, a waste of 10 Euros I would say, but the Anne Frank museum is incredible.