|Location||120 Iwai, Asahi, Chiba Prefecture|
Ryūfuku-ji (龍福寺?) is a Buddhist temple, formally known as Sentakisan Ryūfuku-ji (仙滝山龍福寺?) located in the Iwai district of the city of Asahi in Chiba Prefecture, Japan. The temple is also known as the Iwai no Taki Fudō (岩井の滝不動?), a reference to a Fudō-myōō statue located under a waterfall on the site.
According to legend, Ryūfuku-ji was founded in the Heian period by the priest Kūkai. By tradition Kūkai carved the statue of Fudō-myōō located in the hondō main hall of the temple. The Fudō-myōō has adherents among locals of the area and the fisherman of the Kujukuri Coast. In the Sengoku period (1467 – 1573) the Shimada clan built Mibiro Castle to the south of the temple, but it and the temple were completely destroyed by fire as part of local conflicts during the period.
- Niōmon (仁王門?)—temple gate
- Hondō (本堂?)—main hall
- Dainichiden (大日殿?) -- Dainichi Nyorai hall
- Kannondō (観音堂?) -- Kannon hall
- Daishidō (大師堂?)—Daishi hall
Ryūfuku-ji Municipal Forest
Ryūfuku-ji is known for its numerous waterfalls, and many of them flow from the slopes surrounding the temple complex. Ryūfuku-ji and its surrounding forest are protected as a nature and wildlife refuse as part of the Ryūfuku-ji Municipal Forest. In late May and June the genjibotaru species of firefly appear around the hondō and waterfalls surrounding the temple. The temple is surrounded by dense vegetation. Notable examples of plant species such as the otakarakō ligularia and the asukainode fern are found throughout the temple complex. The forest has been designated a Prefectural Natural Monument.
Ryūfuku-ji and the Ryūfuku-ji Municipal Forest is in the Iwai District of Asahi, and is located four kilometers north of Iioka Station on the JR East Sōbu Main Line. The temple and municipal forest is accessible by bus from the station.
- The Glossary of Japanese Buddhism for terms concerning Japanese Buddhism, Japanese Buddhist art, and Japanese Buddhist temple architecture.
- 仙滝山龍福寺 岩井滝不動前(Japanese)
- 県指定天然記念物 龍福寺の森 [Prefectural Natural Monuments - Ryūfuku-ji Forest] (in Japanese). Chiba Prefecture. Retrieved 20 April 2012.
- 龍福寺（りゅうふくじ）の森 [Ryūfuku-ji Forest] (in Japanese). Asahi City. Retrieved 20 April 2012.
- 文化財一覧 [List of Cultural Properties] (in Japanese). Asahi City. Retrieved 20 April 2012.