Holland has about three hundred castles and a number of them are open to the public. Many of the castles are still decorated in the style of centuries ago. Admire the historic rooms, the design and the stunning gardens. In some castles you can even stay for the night! Castle Loevestein in the little town of Poederoyen in Gelderland is located at the junction of the Meuse and Waal rivers. Loevestein is a water fortress. It was built in the period 1357-1368. The six-hundred-year -old castle was originally built as a penitentiary. If you visit Loevestein, be sure to take a look at the room where Hugo de Groot was incarcerated for two years.