From Baarn you can take a boat tour to Amersfoort, Huizen and Bunschoten-Spakenburg. You can take your bike with you. The port in Baarn is just 5 km away from Buitenzorg. Fares depend on your destination, but will cost you around 5-15 euro per person.
Climbing forest (3,5 km)
In Lage Vuursche, at walking distance fro Buitenzorg you can do a climbing track in the trees, ranging from 2 to 22 meters in height. ‘Klimbos Gooi en Eemland’ is an exciting experience for all your scouts. Prices range from 16-23 euro, depending on the age of your scouts and the selected tracks. Be sure to book in advance.