In April 1177, a great fire (called 'the Great Fire of the Angen era' or 'Taro (a common name for a first son) Fire') broke out and completely burned the Daidairi (Heian Imperial Palace), Daigokuden (Council Hall in the Imperial Palace) and Kancho (government offices).
安元3年（1177年）4月には、大内裏・大極殿・官庁の全てが全焼する大火が発生した（太郎焼亡）。