The is a lot of architecture in Rotterdam to see: the new Central Station, Markethal, kubic houses, The Rotterdam building, Euromast, Erasmusbridge etc.
The classic attractions are: a harbour tour, zoo Blijdorp, museum like Boymans van Beuningen - art, Kunsthal - art, Architecture museum, Dutch Photo museum, The Wilhelminapier area.
Trendy places are the upcomming area on Katendrecht with new cultural en very good restaurants. Witte de With street, galleries, nice shops bars and restaurants. And some trendy places in the Nort of the city, we w'll be happy to tell you.
For kids: zoo, ontdekhoek (discoveryworld), miniworld (miniature train), Plaswijckpark (attraction park for kids till 12 years old), special art museum for kids with nice workshops Villa Zebra, swimming pool, theatershows.