The Norwegian Horticultural Museum in Grimstad is part of the Doemmesmoen. The museum includes exhibits such as gardening and horticultural tools. There is also a fascinating wine museum, together with old objects from Fuhr’s wine cellar. There is also a seed shop, where you can buy seed of all sorts. The museum is the home of Knut Hamsun’s tractor, a model dating from the late 1920s.