Regarded by locals as a 'temple of flowers', the Shiofune Kannonji temple in Ome City has over 20,000 azaleas that bloom beautifully every year from mid-April to early May. Its many attractions include the historical Main Hall that dates back to the Muromachi period (1336-1392) as well as the towering Shiofune Peace Kannon statue, which overlooks the azalea valley.
While admission is usually free, there's a ¥300 entry (primary school students and younger children ¥100) during the azalea festival. (Check the temple's Facebook page for the latest blooming updates.)