Kronborg
The castle is at the narrowest point of the Øresund, the sound between Denmark and Sweden. In this part, the sound is only 4 km wide. Because of this it was important to keep a fortress to command one of the few outlets of the Baltic Sea. The castle has for centuries been one of the most important Renaissance castles in Northern Europe. It was added to UNESCO's World Heritage Sites list on November 30, 2000.