https://en.wikipedia.org/wiki/Parliament_House,_Stockholm

The Parliament House (Swedish: Riksdagshuset is the seat of the parliament of Sweden, the Riksdag. It is located on nearly half of Helgeandsholmen (island), in the Gamla stan (old town) district of central Stockholm.

https://en.wikipedia.org/wiki/Riksdag

The Swedish word riksdag, in definite form riksdagen, is a general term for "parliament" or "assembly", but it is typically only used for Sweden's legislature and certain related institutions. In addition to Sweden's parliament, it is also used for the Parliament of Finland and the Estonian Riigikogu, as well as the historical German Reichstag and the Danish Rigsdagen. In Swedish use, riksdagen is usually uncapitalized. Riksdag derives from the genitive of rike, referring to royal power, and dag, meaning diet or conference; the German word Reichstag and the Danish Rigsdag are cognate.[10] The Oxford English Dictionary traces English use of the term "Riksdag" in reference to the Swedish assembly back to 1855.