Christian IV was the oldest son of Frederick II. He was born in Frederiksborg in 1577, assumed the throne when he was 11 years old and was crowned eight years later. His rule lasted 59 years, from 1588 until 1648. This is the longest reign in Denmark’s history. While the king of Denmark and Norway, Christian Firtal not only built this magnificent Frederiksborg Castle but also several other grand structures in Denmark. His dream was to make the country an international trading center and a superpower with a dominant navy and army. Although he is credited with sweeping reforms and a growing prosperity, his aspirations eventually led to overspending, several wars and economic decline.