From the Prinsengracht and Blomgracht bridge (opposite the Anne Frank house), have a look at Westerkirk and its wonderful tower. It is absolutely straight. Then walk a couple of hundred metres down Blomgracht, stopping around number 28 Blomgracht.
Now look at the tower: it becomes the leaning tower of Amsterdam. Amsterdam can do interesting things with perspective if you let it. And at some point in your visit, just stop and do nothing. Amsterdam is a great place to hang out and people watch.
Opposite the Anne Frank house
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