Ryūkō-ji Temple

Overview

Ryūkō-ji (龍口寺, りゅうこうじ) is a Buddhist temple in Katase, in the city of Fujisawa, Kanagawa Prefecture, Japan. It belongs to the Nichiren Shū (日蓮宗), the school of Buddhism that traces its lineage to the thirteenth-century monk Nichiren. The temple was founded in 1337, in the second year of the Engen era, during the Muromachi period.

Ryūkō-ji occupies a site of unusual importance in the history of Japanese Buddhism. It stands on the former Tatsunokuchi Execution Grounds, where Nichiren was brought to be beheaded and was instead spared. That event, the Tatsunokuchi Persecution, is the reason the temple exists, and it shapes everything about the place: its name, its layout, and the objects preserved on its grounds.

History

The story begins with Nichiren, the monk whose teaching that the Lotus Sutra holds the definitive truth of Buddhism brought him into repeated conflict with the Kamakura shogunate and with other Buddhist schools. In 1271, officials took him to a stretch of coast near Kamakura to carry out his execution. According to the tradition preserved at the site, the execution failed. Nichiren survived, was taken into custody instead, and was later exiled. The place where this happened took its name from the event: Tatsunokuchi (龍ノ口), "dragon's mouth," the same two characters that appear in the temple's own name.

For roughly six decades the site remained an execution ground rather than a temple. Ryūkō-ji was established there in 1337 by Nippō, a disciple of Nichiren, who founded it to mark the place where his teacher had been taken to die. The founding fell in the Engen era, in the early decades of the Muromachi period, when the shogunate had moved to Kyoto and Nichiren's followers were consolidating the institutions that would carry his teaching forward.

The temple's identity is therefore double. It is a Nichiren Shū foundation with a founder, a date, and a lineage, and it is also a memorial site — a place where a specific, datable event in the life of the sect's founder is understood to have occurred.

What Stands There Today

The temple grounds hold several major structures. The hondō (本堂, ほんどう) is the main hall, where the central objects of worship are enshrined and the principal ceremonies are held. A five-story pagoda stands on the grounds, along with a sharitō (舎利塔, しゃりとう), a stupa built to house relics. There is also a Shichimendō (七面堂, しちめんどう), a hall dedicated to the Shichimen deity, a figure venerated within Nichiren Shū practice.

The cave where Nichiren was confined is preserved on the temple grounds, keeping the physical setting of the 1271 event accessible. In the courtyard in front of the hondō stands a statue of Nichiren.

The temple is a short walk from Enoshima Station on the Enoshima Electric Railway, and from Shōnan-Enoshima Station on the Shonan Monorail. Its position in Katase places it near the coast and near Enoshima, the island that gives the surrounding area its name.

The Name in Japanese

The temple's name is written 龍口寺. It is read in kana as りゅうこうじ, and in romaji as Ryūkō-ji.

The name breaks into three characters, and the first two are the heart of it.

龍 — read here as りゅう (ryū). This is the character for "dragon." It is a dense, many-stroked kanji, and in Japanese it carries a weight beyond the animal itself: dragons in East Asian tradition are associated with water, clouds, and great power. The character also appears in place names and temple names across Japan.

口 — read here as こう (kō), though its more familiar standalone reading is くち (kuchi). It means "mouth" or "opening." It is one of the simplest kanji in the language, three strokes forming a square.

Together, 龍口 spell Tatsunokuchi — "dragon's mouth" — the name of the execution grounds. The combination is vivid and grim: a place that swallows what is brought to it. When the temple was founded on that ground, it kept the name rather than replacing it.

寺 — read here as じ (ji). This is the standard character for a Buddhist temple, and it closes the names of temples throughout Japan. Its presence marks Ryūkō-ji as a temple specifically, as distinct from a shrine, which would use 神社 (じんじゃ, jinja).

The reading of the full name is not a simple sum of the parts. 龍口 as a place name is read Tatsunokuchi, but inside the temple's name the same two characters are read Ryūkō. The temple name and the place name share their writing and their meaning while differing in pronunciation — a useful reminder that in Japanese, kanji carry meaning and kana carry sound, and the two do not always line up the way a learner expects.

Visiting and Context

Ryūkō-ji sits in a part of Kanagawa Prefecture that draws visitors for reasons beyond the temple itself. Enoshima and the Shōnan coast are a short distance away, and the temple is reachable on foot from two stations serving two different rail lines, which makes it easy to fold into a day in the area.

For a student of Japanese, the temple rewards attention to its name. The characters 龍口 appear twice over in the same place — once as the historical execution ground, once inside the temple's own name — with two different readings. Recognising that 寺 marks a Buddhist temple and 神社 a Shinto shrine is one of the small, practical distinctions that makes reading Japanese place names much less confusing. Ryūkō-ji is a clean example of both points, attached to a site with a specific and datable history behind it.