Fumon-kan (Dedicated April 1970, 5,000-seat Hall)Beyond its role as a religious venue, Fumon-kan embodied Risshō Kōseikai’s mission to "promote cultural, academic, and artistic development." Nicknamed the "Kōshien of Wind Ensembles" for its musical activities, the hall served diverse audiences for four decades until its 2012 retirement (post-2011 Tohoku Earthquake seismic concerns).Demolition planning honored the hall’s symbolic value—built with devotees’ passion—focusing on "Beauty in Demolition" and "Memory and Creation" for the post-demolition space. Using Japan’s top heavy machinery, the serene, elegant dismantling gave birth to a "public square" where people can reflect on Fumon-kan’s legacy while envisioning the future.