For do-it-yourselfers, this app is a convenient way to see the sites without the hassle of a group tour and/or the cost of a guide. Buy the app and get going. This "Cool Walking Tour" will take about 2 hours, covers 4.2km, and takes you past 8 sites.
Rotterdam is a relatively quiet and subdued city, especially compared to Amsterdam. The Holland Casino is one place for pandering to your vices. Holland is a casino franchisor of sorts, owning multiple locations throughout Europe.
One of the better water cruises in Rotterdam, this 75-minute large boat ride (with plenty of windows etc. -- see their site) will take you around the famous port city and highlight interesting facts, places, etc.
In the summer, join up to 20K people for a weekly inline skate on Wednesday nights. The route begins in Rotterdam City Centre and meanders through 16 kilometers of city and riverside streets. All roads are closed/protected from auto traffic.
