Almost the first thing we did, upon arrival in Bruges, was to hop on one of the many boats for a tour of the canals. We arrived in the morning (after a brief stop in Brussels for breakfast) and our hotel room wasn't going to be ready for a few hours. The weather was lovely, and a short boat trip felt just the thing to get our holiday off to a good start.
Before we could do that, though, we had to buy the Bruges museum card... which includes a canal trip in the price. If you've got a couple of days and fancy checking out a few of the weird and wonderful museums, this is definitely a worthwhile investment.
Since the canals go (almost) everywhere, the boat gives you a great way to get your bearings, and start forming a list of places to go back to. It's also just so pretty, and a very relaxing start to the weekend.