Reichsburg Trifels is a medieval castle in Annweiler in Rheinland-Pfalz, Southwestern Germany that has been gradually restored since the 19th century - today, replicas of the Imperial Regalia of the Holy Roman Empire are on display here. It was first mentioned in a 1081, when it was held by local noble Diemar, relative of Archbishop Siegfried I of Mainz. From him, Trifels passed to the Imperial Salian dynasty. Emperor Henry V made it a Reichsburg (Imperial Castle). Upon his death in 1125, his nephew Duke Frederick II of Swabia made it a place of safekeeping for the Imperial Regalia of the Hohenstaufen emperors until, in 1220, Frederick II of Hohenstaufen moved them to Waldburg in Swabia. Trifels is also famous as the site where King Richard I of England (Richard Lionheart) was imprisoned after he was captured by Duke Leopold V of Austria in 1192 on his return from the Third Crusade. Handed over to Emperor Henry VI of Hohenstaufen, a period of captivity here from 31 March to 19 April 1193 is well documented. According to legend, Richard was found and freed by the trobador Blondel de Nesle and released for an enormous ransom. After the fall of the Hohenstaufen dynasty, the castle was pledged several times; it finally fell to the Dukes of Palatinate-Simmern & Zweibrücken in 1410 and decayed after the Thirty Years’ War. From 1840, the Wittelsbach kings of Bavaria had it rebuilt. It was significantly enlarged in the WWII era, supervised by Bavarian prime minister Ludwig Siebert. The present-day castle is in large parts not true to the medieval original but it still stands.