Hills. You have to know where to find them in the Netherlands. In the heart of Overijssel, there are no less than six all together, in the Sallandse Heuvelrug national park. The best known is the Holterberg. At the foot of this 100-metre hill lies the car-free Landal Twenhaarsveld. This afforested bungalow park has many facilities. It's a lovely basis for an entertaining hike, a cycling tour or a tilt-cart tour. 2008 utility fee - to be paid on arrival, per unit - is €37 (2-bedroom) and €55.50 (3-bedroom). Please be advised that tourist tax is payable on arrival per person