When we talk about cities of Holland with canals, Amsterdam is the first that come to mind. But there are many more cities with canals that have very interesting tours. This is the case of 's-Hertogenbosch, which is better known as Den Bosch. The walking tour takes you through the canals of the historic city center, which used to be used as sewers, and goes out the old walls. It is a very relaxing ride, where you go under houses while they explain the history of the remains of the wall that you find along the way. The tours are generally in Dutch, but even so they are worth it. There are 2 tours, one of 40 minutes and another one lasting one hour.