Since 28 April 1994, it is the secondary official residence of the President of Germany, the Chancellor of Germany, the Bundesrat (upper house), the primary official residence of six federal ministries, and approximately 20 federal authorities.
This is merely a title, since Bonn is not an autonomous city like Berlin, Bremen or Hamburg, but part of a state (North Rhine-Westphalia).
[1] The Russian constitution[2] states that it has three cities of federal importance (город федерального значения, gorod federalnogo znacheniya): Moscow, St. Petersburg[3] and Sevastopol[4][5] (disputed with Ukraine since the 2014 Russian annexation of Crimea).
[citation needed] Some national capitals, like Astana, Bogotá, Brasília, Buenos Aires, Canberra, Caracas, Islamabad, Jakarta, Jerusalem, Mexico City, Seoul, Washington, D.C., and Yerevan, among others, have a federal status, not belonging to any state or province (or being a state or province of their own, as is the case of Berlin, Delhi, Moscow, Oslo, Prague, Sofia, and other cities).
Several unitary states have direct-controlled municipalities, cities equivalent in status to provinces, which often include the national capital.