murder, arson or the like were categorised as "dishonest" and had to serve the full sentence doing hard physical labour inside the castle ramparts. Otherwise, they served their time under the same conditions: they all had to wear chains and spend nights in cold and damp dungeons. From January 17, 1772, to April 30, 1772, Kronborg was the place of imprisonment of Queen Caroline Mathilde, sister of King George III, following the scandal of her affair with Johann Friedrich Struensee. As Kronborg's importance as a royal castle diminished, the armed forces came to play a greater role. From 1785 to 1922, the castle was completely under military administration. During this period, a number of renovations were completed. Sound Dues and recent history The captain of every ship sailing through the strait had to state the value of ship's cargo. Money that had to be paid to the King of Denmark, called Sound Dues, was then calculated depending on the value of the cargo. The king had the right to buy the cargo for the price the ship's captain stated. This policy prevented captains from stating prices that were too low. The Royal Danish Army left the castle in 1923, and after a thorough renovation it was opened to the public in 1938. Kronborg today Kronborg Castle is located on the extreme northeastern tip of the island of Zealand, to the northeast of the historic centre of the town of Helsingør. It is situated at an elevation of 12 metres, on a small foreland jutting out into the narrowest point of the Øresund, the sound between the Danish island of Zealand and the Swedish province of Scania, that was also Danish until 1658. The approach from the town is to the east, with a series of moats and gates protecting the route from the town to the castle itself. Royal apartments The royal apartments are located on the first floor of the north wing. The apartments were originally furnished by Frederick II around 1576, but after the fire in 1629, Christian IV had the apartments refurnished and richly decorated with ceiling paintings, stone portals and chimneypieces. The original floors were tiled in black and white which were replaced with wooden floorboards in 1760–61, and the walls were clad in gilt-leather. Today the chambers are furnished with Netherlandish furniture from the 17th century. The King's Chamber has a bay window, located right