chapel. Most of the palace complex was completed in 1745 and was the largest palace in northern Europe at the time. The palace and church were ruined by a fire in 1794, but the showgrounds were saved. Second Christiansborg While the royal family lived in temporary accommodations at Amalienborg Palace, the master builder of Altona, architect Christian Frederik Hansen, was called to Copenhagen to resurrect the palace. Hansen started building the second Christiansborg in 1803 in a French Empire style. By the time the palace was finished in 1828, King Frederick VI had decided he did not want to live there after all, and he only used the palace for entertainment. King Frederick VII was the only monarch to live in the palace. This was between 1852 and 1863. After the introduction of the constitutional monarchy with the Constitution of 1849, the south wing of the palace became the meeting place of the two houses of the first Danish Parliament (the Rigsdagen). The second Christiansborg burned down in 1884. The showgrounds, including the Riding School, court theatre and Hansen's chapel were saved. The ruins remained in place for the following 23 years due to political fighting. Third Christiansborg Thorvald Jørgensen won an architecture competition to decide who would design the third (and current) Christiansborg, which was built from 1907 to 1928. The palace was to contain premises for the royal family, the legislature and the judiciary, and was built in Neo-baroque style in reinforced concrete with granite-covered facades. Fragments from C.F. Hansen's palace were preserved in the north facade facing Prince George's Yard (Prins Jørgens Gård). The original roof was tiled, but after a national collection, the tiles were replaced with copper in 1937–1938. A weather vane with two crowns was later added to the tower, and at 106 meters became the tallest tower in the city. During the digging work, they came across the ruins of Absalon's Castle and Copenhagen Castle. It was decided to make them publicly accessible, and the ruins under the current palace, and the historical exhibition opened to the public in 1924. Christiansborg Palace today The palace is roughly divided in the middle, with the Parliament located in the southern wing and the Royal Reception Rooms, the Supreme Court and the Prime Minister's Office in the northern wing. Several parts of the palace are open to the public after published schedule with guided tours available,