Holy Roman Empire
The empire was dissolved on 6 August 1806, when the last Holy Roman Emperor Francis II (from 1804, Emperor Francis I of Austria) abdicated, following a military defeat by the French under Napoleon at Austerlitz (see Treaty of Pressburg). Napoleon reorganized much of the Empire into the Confederation of the Rhine, a French satellite. Francis' House of Habsburg-Lorraine survived the demise of the empire, continuing to reign as Emperors of Austria and Kings of Hungary until the Habsburg empire's final dissolution in 1918 in the aftermath of World War I.
Austrian Crown Jewels
The Imperial Regalia are the insignia of the Holy Roman Empire. After 1438, the Holy Roman Empire was ruled by the House of Habsburg, with only one brief exception. From 1508, after his election, the German King no longer called for the coronation by the Pope either, but considered himself Roman emperor directly. The crown was probably used for the first time for the coronation of Konrad II; the last time was for Franz II in 1792.