Very old canal houses. I would have to say that Amsterdam is perhaps the most beautiful city that I have been to. The old houses and buildings along old canals, what more could you want? Why did those freakin' stupid Germans have to blow up Rotterdam? It was supposedly once a beautiful city as well. Don't get me wrong, I like Rotterdam a lot and I enjoy it's sleek, modern look but you can't beat beautiful old houses and canals. Sorry if you are German. I have been reading about the concentration camps during WWII so I am a little ticked at the Germans right now. Well I know things have changed.