Since 1907 the Parliament of Finland was convened in House of the Estates and Finnish House of Nobility. Both buildings became however too small for the 200 members of the independent Finland Parliament. In 1923 a competition was held to choose a site for a new Parliament House. Arkadianmäki, a hill beside what is now Mannerheimintie, was chosen as the best site.
The architectural competition which was held in 1924 was won by the firm of Borg–Sirén–Åberg. Johan Sigfrid Sirén was given the task of designing Parliament House. The building was constructed 1926–1931 and was officially inaugurated on March 7, 1931. Ever since then, and especially during the Winter War and Continuation War, it has been the scene of many key moments in the nation's political life.
Sirén designed Parliament House in an architectural style combining Neoclassicism with early twentieth century modernism. The exterior is red granite and the façade is lined by fourteen columns with Corinthian capitals. The building has five floors, each of which is unique. The floors are connected by a white marble staircase and famous paternoster lifts. Most important for visitors are the main lobby, the stately Session Hall and the large Hall of State.
Guided tours are arranged in Parliament house. Tuesdays and Fridays you can watch the Parliament in session from the public balcony.
Reference: Wikipedia
Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.