One-hour boat tours around southern Esrum Sø depart according to weather and demand from beside the Skipperhuset restaurant, but you'll have to pre-book or be lucky enough to hit upon another group's departure with available spaces.

Routes vary according to request but typically loop past the old jetty at Sørup, a bird sanctuary and Nødebo on the west bank before recrossing the lake from Dronningens Bøge to the castle park. A simple drop-off for Gribskov Forest walkers is also possible, or an out-and-back crossing with coffee stop at Fændrikhus.