The Parliament building and State Bank on Helgeandsholmen were inaugurated in 1905 and 1906 respectively. In the 1970s and 1980s the two buildings were combined and restored and a modern extension built to house a new, single debating chamber, the chamber is truly Nordic in its decoration with benches of Swedish birch and wall-panelling in Finnish birch carved in Norway. A large tapestry, Memory of a Landscape covers 581 square feet of wall and took 3,500 hours to make. Parliamentary debates can be watched from the public gallery.

The original two-chamber Parliament is used for meetings of the majority party. The former Upper House has three paintings by Otte Skold; the other chamber contains works by Axel Torneman and Georg Pauli. Between the chambers is a 148-feet long hall with an elegant display of coats of arms. The finance committee meets in the oak-panelled library surrounded by old prints and Jugendstil lamps.