The Reichstag Building is a historic building in Berlin, Germany, built to house the German Empire’s Imperial Diet. It was opened in 1894 and housed the Diet until 1933 when, after being set on fire, was severely damaged.
The word Reichstag was first used to refer to a diet during the Holy Roman Empire. The building was designed for the German Empire’s Diet, which was replaced by the Weimar Republic’s Reichstag. After the 1933 fire, Nazi Germany’s Reichstag fled the building (and ceased to function as a parliament) and never returned, replacing it with the Kroll Opera House; the name Reichstag has not been used by German parliaments since World War II. The term Reichstag (Imperial Diet) now often refers to the house, while Bundestag (Federal Diet) refers to the organization.