This early Kamakura period gate located at the southernmost point of the southern main monastery was given this name as it was relocated from its original site at the Hojo clan Rokuhara government office.
南正面に立つ本坊伽藍の最南端にある鎌倉時代前期の門で、もと北条氏の六波羅政庁にあったものを移したことから、この名で呼ばれている。