德川家宣
The Sanmon (written 三 門, sometimes 山 門) gate is Taiseki-ji's "main front door" and has been designated as a Shizuoka prefectural cultural asset. It was built in 1717 with financial assistance from Lady Hiroko Konoe (also known as “Tennei-in”), the daughter of Imperial Princess Tsuneko and wife of sixth Shōgun Tokugawa Ienobu. A Gohonzon transcribed by 25th High Priest Nichiyu Shonin is enshrined within its upper floor. At the time, she donated 300 ryō for its construction. Positioned next to public government roads, it was significantly vandalized and defaced with graffiti in 1997. It was recently restored, and its Gohonzon was ceremoniously re-enshrined within again on 15 January 2021.