The castle is big and we'll preserved. It resides on the hill of the sandstone that was used to build the castle. The walk from parking place uphill is spectacular with rock outcrops and walls growing from them. The tallest tower was build at 11th century and the castle was growing around it. The view from the tower and wall is magnificent. The ascend to the tower is exciting, but you should be well fit to climb all the stairs to the top.There is no lift. The main palace was well restored in 19th century in the German Gothic Revival. There is a descent collection of the middle age armor, restored interiors. I liked stained glass. The weddings going on on the weekends, so some of halls may be not be available for taking pictures, but you can still take a look. There are lifts for people with wheel chairs. Do not miss the historical collection of old coins that were minted in the castle in 16-17 centuries, old manuscripts and gold cup from the bronze age that was found not far from the castle.The small church houses the oldest stone crucifix in the North Europe. Reserve 1,5-2 hours or more for walking, climbing and just sitting and enjoying the history around you. The parking place is big and camping vans could be parked. The price 6 euro per day for car and 9 for camper. There is just 1 parking machine near the entrance. The buttons respond weakly and its slow. However, you can switch language to Dutch and English and even pay by card. I have done it with little help from some kind German family. After payment gone, leave the printed ticket on the dashboard of your car so you are not fined. Note that inside the castle the information is duplicated in German and Dutch. No English. The tickets to the castle are sold at the entrance either from the cashier or ticket machine (menu is German).