When Iemitsu TOKUGAWA became shogun by imperial proclamation at Fushimi-jo Castle in 1623, Fushimi-jo Castle was destroyed due to the edict which stated that each domain could only have a single castle.
そして元和9年（1623年）に徳川家光が伏見城にて将軍宣下を受けた後、一国一城令に基づいて伏見城は廃城となったのである。