Enmeiji Temple Gate

Enmei-ji Temple Sanmon Gate: A Castle Gate Reborn as a Buddhist Entrance

Standing quietly at the entrance of Enmei-ji Temple in Shiroishi City, Miyagi Prefecture, the Sanmon Gate is far more than a typical temple entrance. This imposing two-story wooden structure was originally the Umayaguchi-mon (Stable Entrance Gate) of Shiroishi Castle, one of the most historically significant fortifications in the Tohoku region. Relocated to the temple grounds around 1874, the gate serves as a rare surviving remnant of the original Shiroishi Castle — a castle that played a pivotal role in Japanese history from the Sengoku period through the Meiji Restoration.

Registered as a national Tangible Cultural Property in February 2016, the Enmei-ji Sanmon Gate offers visitors a tangible connection to the samurai era and the powerful Katakura clan who governed Shiroishi for over 260 years as trusted retainers of the Date family of Sendai Domain.

Historical Background: From Castle Fortress to Temple Gate

Shiroishi Castle was originally built during the late 16th century and served as a strategically important stronghold controlling the routes between Sendai and the southern provinces. After the Battle of Sekigahara in 1600, the castle was entrusted to Katakura Kagetsuna (known as Kojuro), the renowned strategist and right-hand man of Date Masamune, the first lord of Sendai Domain. Remarkably, Shiroishi Castle was one of the few exceptions to the Tokugawa shogunate's "One Castle Per Province" edict of 1615, being permitted to stand alongside Sendai Castle.

The Umayaguchi-mon served as a critical defensive point on the northern side of the castle complex. Its name literally means "Stable Entrance Gate," as it guarded the passage to the castle's stables compound. However, it was much more than a simple entry — the gate featured loopholes (sama) on both floors, and its wide latticed windows on the upper level made it an essential fortification for defending the main compound from attacks approaching from the north.

Following the Meiji Restoration in 1868 and the subsequent abolition of feudal domains, Shiroishi Castle was dismantled in 1874 under the government's order. While most structures were lost forever, the Umayaguchi-mon was rescued by being relocated to Enmei-ji Temple, where it was adapted as the temple's main gate. During the relocation, some architectural modifications were made: the original irimoya (hip-and-gable) roof was converted to a kirizuma (gable) style, and katomado (fire-shaped lantern windows) were added to the first-floor walls along with genjomado (uniquely shaped windows) on the second floor, giving the structure a more temple-appropriate appearance.

Architectural Significance and Cultural Property Designation

The Enmei-ji Sanmon Gate was registered as a national Tangible Cultural Property on February 25, 2016, following a recommendation by the Council for Cultural Affairs. The gate is recognized as a valuable surviving element of Shiroishi Castle that contributes significantly to the historical landscape of Shiroishi.

Architecturally, the gate is classified as a sanken-ikko-mon (three-bay, single-opening gate) in the yaguramon (turret gate) style. It is a wooden, two-story structure with a tile roof and a total building area of approximately 28 square meters. The upper turret section is finished with white plaster (shiro-shikkui), and the front features two kozama openings fitted with vertical lattice bars. These kozama, originally designed as defensive observation and firing positions, remain as evidence of the gate's military origins.

The construction period is estimated to be in the late Edo period, between approximately 1751 and 1830. The gate is one of only two surviving original structures from Shiroishi Castle — the other being the Higashiguchi-mon (Eastern Gate), which was relocated to Toshin-ji Temple, also in Shiroishi. Together, these relocated gates provide invaluable physical evidence of Shiroishi Castle's original architecture.

Enmei-ji Temple: A Place of History and Legend

Enmei-ji Temple itself is a Shingon-shu Chizan-ha Buddhist temple with a history spanning over 400 years. Founded during the Tensho era (1572–1591) by the monk Takuhiko Shunyu Hoin, the temple was established on the site of an older temple called Choseki-ji. The temple enshrines Dainichi Nyorai (Mahavairocana) as its principal deity, with Enmei Jizo Bosatsu (the Life-Extending Jizo Bodhisattva) as a flanking figure.

The temple is situated in the Sumazugaike area, northeast of the former Shiroishi castle town. The place name "Sumazugaike" (meaning "unsettled pond") has a fascinating legendary origin: it is said that when Minamoto no Yoshitsune was traveling to Hiraizumi, his loyal retainer Musashibo Benkei stopped at this spot to sharpen his naginata (polearm) in a nearby pond. The rust from the blade flowed into the water, causing it to remain murky ever since — hence the name "Sumazugaike."

Within the temple grounds, visitors can also find the Korori Jizo (also called Anchin Jizo), a stone statue connected to the famous legend of Anchin and Kiyohime from the Dojo-ji temple story. According to local tradition, Anchin was originally from Shiroishi, and this Jizo was erected to console his spirit.

Every year on July 15 and 16, the temple hosts the Daisho-Kangiten Festival, a lively summer celebration that marks the beginning of the summer festival season in Shiroishi. Visitors can enjoy food stalls lining the approach to the Sanmon Gate and traditional goma fire rituals.

Highlights and What to See

When visiting the Enmei-ji Sanmon Gate, take time to appreciate the unique blend of military and religious architecture. The white-plastered upper story with its latticed kozama windows is the most visually striking feature, clearly revealing the gate's castle origins despite its transformation into a temple entrance. Look closely at the first-floor walls for the katomado (lantern windows), which were added during the relocation to give the gate a more refined, ecclesiastical appearance.

A visit to the gate pairs well with a broader exploration of Shiroishi's samurai heritage. The reconstructed Shiroishi Castle, located just a short walk away, features a magnificent three-story wooden keep (rebuilt in 1995) and offers panoramic views of the surrounding area. The Toshin-ji Temple houses the other surviving castle gate (the Higashiguchi-mon), making it possible to compare two original castle structures in a single day.

The former Koseki Samurai Residence, also in the vicinity, provides a well-preserved example of a mid-ranking samurai family's home from the Edo period. For food enthusiasts, Shiroishi is famous for its umen (warm noodles), a local specialty with a history dating back to the Edo era. The combination of authentic cultural heritage and culinary tradition makes Shiroishi an ideal day-trip destination from Sendai.

Surrounding Attractions

Shiroishi City and its surroundings offer numerous cultural and natural attractions that complement a visit to Enmei-ji Temple.

• Shiroishi Castle (reconstructed in 1995): A faithfully rebuilt wooden castle selected as one of Japan's Continued Top 100 Castles, approximately 10 minutes on foot from Enmei-ji.
• Toshin-ji Temple: Houses the relocated Higashiguchi-mon (Eastern Gate) of Shiroishi Castle, another important surviving structure.
• Kawarasaki Shuku Honjin (Former Inn for Feudal Lords): A historic inn along the old Oshu Kaido highway.
• Shiroishi-Zao area: The Zao mountain range offers hot springs, skiing, and the famous frost-covered trees (juhyo) in winter. Togatta Onsen is particularly popular.
• Shiroishigawa Embankment Hitome Senbon-zakura: One of Miyagi Prefecture's most celebrated cherry blossom spots along the Shiroishi River, best viewed in early to mid-April.