Acquired by Katsumoto HOSOKAWA, the land at the foot of Mt. Kinugasa (Kyoto Prefecture) on which Ryoan-ji Temple is located had been a mountain retreat of the Tokudaiji family from the time of Saneyoshi TOKUDAIJI, a descendent of the FUJIWARA-Hokke family.
衣笠山(京都府)山麓に位置する龍安寺の所在地は、藤原北家の流れを汲む徳大寺実能以来、徳大寺家の山荘であったところを、細川勝元が譲り受けたものである。