Their website says it is a tour you will never forget...and that may very well be the case! With 22…read morevery low bridges, you will not only have to duck, but may have to crouch on the floor since there is one specific bridge that the boat itself (and seat backs) barely fit under and you can here the cars over head. Though it is a great tour and great experience, I would not recommend this to the elderly, or anyone that gets claustrophobic! I'll admit, I even got scared at times. Our captain was lovely and she gave the tour in at least Dutch and English, there may have been German as well. But the sights are worth the trip, and we were very happy with the price as well.