From 1720 to 1729, Frederik IV undertook extensive renovations aimed at transforming the old asymmetrical castle into a modern Baroque building, and just two years later, in 1731, Frederik IV’s son Christian VI demolished the castle in favour of a new, large residential palace with a riding ground and a palace chapel to be named after The King: Christiansborg Palace – the largest palatial complex in Denmark to date. The Royal Family moved into the palace in 1740.

The castle’s kilometres-long and poorly maintained chimney system was the primary cause of the catastrophic fire that ravaged the castle in 1794. For a long time, the exterior walls of the palace stood as a scorched monument; however, in 1805, construction began on a new Christiansborg Palace at the same location. The completed building, inaugurated in 1828, was a smaller royal palace designed in an orderly neoclassical style, featuring whitewashed walls and lacking a tower. However, after its completion, the royal family did not return. Among other functions, the building housed the Supreme Court of Denmark and Rigsdagen, the first Danish Parliament following the introduction of the Danish Constitution of 1849.

Like its predecessor, the second Christiansborg Palace was never completed and was destroyed by fire in 1884. In 1903, parliamentarians hastily passed an act to rebuild the palace due to the urgency stemming from a desire to present the Reconstruction Act as a gift to Christian IX from the people, coinciding with the 40th anniversary of his accession to the throne that year. Construction on a Neo-Baroque palace designed by architect Thorvald Jørgensen began in 1906. In 1928, Christian X officially inaugurated the palace, intended to unite the monarchy, court, and democratic parliament under one roof. In this context, the structure of the third Christiansborg Palace, which includes the Royal Reception Rooms, Parliament, and the Supreme Court, should be regarded as a work of compromise – much like the functioning of Danish democracy.