Netherlands
The best thing to do in Rotterdam is leave the railway station, get the no.5 tram down to the river where the SPIDO harbour cruises start from, well worth the hour and a half that it'll take. When you come back, go back east a bit along the riverfront and get one of the classic polished wooden watertaxis to the old Holland America Line HQ on the south bank, now the Hotel New York with a busy bar/restaurant. The 30s style boat costs nearly nothing and was the highlight of my trip.
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