Cycling from the Zenne to the Dender is cycling through countryside, greenery and silence. Visit the internationally known rose garden of Coloma en route. Here you will find more than 3,000 rose varieties that grow on 60,000 bushes. Hiking and walking in the 15 acre domain is wonderful.If you are a plant lover, you should also check out the special collections of tree peonies, hydrangeas and the unique collection of Ghent Hart-Azelea on the Groenenberg castle domain. The museum garden of Gaasbeek Castle, on the other hand, offers an impressive overview of traditional and often extremely rare types of fruit, vegetables and trellis.