The Mausoleum is a sacred site built where Saint Nichiren spent his final years and was cremated. Many believers still visit to pray. Surrounded by a deep forest, the tranquil space exudes a sacred and special atmosphere. The Sanmon Gate, the main gate of Kuon-ji Temple, is a majestic wooden structure rebuilt during the Edo period, standing approximately twenty-one meters tall. Its imposing appearance invites visitors into a world beyond the ordinary.