If you have any interest in castles, then one of the best things to see in Denmark outside of Copenhagen is Frederiksborg Castle. Located in the small town of Hillerød, this majestic castle was once a residence for the Danish royal family. Of course, you’re going to want to begin with the castle itself, first admiring its Renaissance design before heading inside. The castle now hosts the Danish Museum of National History, with plenty of portraits and art which reflects Denmark’s history. The most impressive parts of a castle tour is the elaborate Castle Chapel as well as the cavernous Great Hall. Afterwards, you’ll want to take a walk across the lake through the expansive castle grounds to see the lovely formal gardens and walking trails.