Joshoin Temple Main Hall Interior

Joshoin Hondo Naijin: A Hidden Edo-Period Sanctuary in the Heart of Tokyo

Tucked behind the towering vermilion gate of Zojoji Temple and within walking distance of the iconic Tokyo Tower, the Inner Sanctuary of Joshoin's Main Hall (常照院本堂内陣, Joshoin Hondo Naijin) is one of the most quietly remarkable structures in central Tokyo. Built in 1769 during the Edo period, this small but exquisitely crafted earthen-walled storehouse-style hall has stood for more than two and a half centuries, surviving both the Great Kanto Earthquake of 1923 and the devastating Tokyo air raids of May 1945. In a metropolis defined by constant rebirth, it is a rare living link to the city of the shogunate.

For visitors looking beyond the famous landmarks of Shiba Park, Joshoin offers an intimate encounter with Edo-era craftsmanship, sacred storytelling, and even kabuki history.

A Sub-Temple of Zojoji with Ancient Roots

Joshoin is one of the historic sub-temples (子院, shiin) of Zojoji, the great Pure Land Buddhist temple that served as one of two ancestral funerary temples of the Tokugawa shogunate. The temple was founded by the priest Shuko Shonin in an unrecorded year, and its origins lie not on its current site but along the shores of nearby Shibaura, the old fishing district that gave the area its name.

According to temple tradition, the principal image enshrined here—an Ikkō Sanzon Amida Nyorai, a triad of Amida Buddha flanked by attendants illuminated by a single mandorla—was miraculously discovered in the net of a Shibaura fisherman. Shuko Shonin enshrined the figure at Joshoin, where it has remained for centuries.

When Tokugawa Ieyasu relocated Zojoji to its current grand location at Shiba in 1598, Joshoin was elevated to the status of a sub-temple within its grounds. Successive head priests of Joshoin were entrusted with administrative duties of Zojoji itself, and the temple also served as the lodging temple (sukubo) for the Hizen Domain ruled by the Nabeshima clan, lending it a quiet but considerable influence in the political and religious life of Edo.

Why It Was Designated a National Cultural Property

On November 20, 2001, the inner sanctuary of Joshoin's Main Hall was registered as a National Tangible Cultural Property (Building). The recognition reflects both its rarity and its remarkable survival.

The structure was originally built in 1769 as an independent Nenbutsu-do, a hall dedicated to the chanting of the Buddha's name. Constructed in the dozo (土蔵造) earthen-walled storehouse style—a fire-resistant technique developed for protecting valuables and sacred objects in the densely packed wooden city of Edo—it is essentially a thick-walled vault designed to withstand the era's two greatest urban threats: fire and theft.

This very design is what allowed the sanctuary to endure where almost everything else around it perished. The Great Kanto Earthquake of 1923 and the Tokyo air raids of May 25, 1945 leveled much of the surrounding Zojoji precinct and the Shiba district, yet this small hall remained intact. After the war, an outer worship hall (gejin) was added in front of it, transforming what was once a stand-alone Nenbutsu-do into the inner sanctuary (naijin) of a fully functioning main hall. Today, the original Edo-period structure forms the spiritual and architectural heart of the temple.

Architectural Highlights and Hidden Beauty

A Quiet Connection to Kabuki Royalty

Joshoin holds another distinction that delights visitors familiar with Japanese theater: it was once the bodaiji (family temple) of the Ichikawa Soke, the Naritaya line of kabuki actors that has produced the legendary Ichikawa Danjuro dynasty. From the first Danjuro through the eighth, the family graves stood within these temple grounds.

In 1934, following the disruption caused by the Great Kanto Earthquake and the religious conversion of the ninth Danjuro to Shinto, the graves were relocated to Aoyama Cemetery. Yet a tangible token of the family's devotion remains: a stone water basin (chozubachi) said to have been donated by the seventh Ichikawa Danjuro still sits within the temple precincts, a quiet memorial to one of Edo's most celebrated artistic lineages.

Visiting the Temple

Joshoin sits within the dense cluster of sub-temples that line the northern edge of Zojoji, just a few minutes' walk from Tokyo Tower. As an active religious institution, the temple is not a museum, and the inner sanctuary itself is generally viewed from the outer worship hall during memorial services and observances rather than as a tourist attraction. Visitors are warmly asked to approach with appropriate respect for those who may be praying or attending services.

Even from outside, one can appreciate the distinctive white plastered walls, the heavy doors, and the quiet atmosphere that surrounds this small but historically significant structure. A short stroll around the precinct also lets you see the Ichikawa Danjuro water basin and other Edo-period stones and monuments scattered through the grounds.

Things to See Nearby

Joshoin's location places visitors at the doorstep of one of Tokyo's richest cultural neighborhoods.

• Zojoji Temple — The grand head temple of the Jodo (Pure Land) sect in the Kanto region, with the magnificent Sangedatsumon main gate (an Important Cultural Property) and the mausolea of several Tokugawa shoguns.
• Tokyo Tower — The iconic 333-meter red-and-white broadcast tower, completed in 1958, rising directly behind the temple precinct.
• Shiba Park — One of Japan's oldest public parks, with broad lawns, ancient ginkgo trees, and views that frame Tokyo Tower against centuries of temple history.
• Kyu Shiba Rikyu Garden — A short walk away, this Edo-period daimyo stroll garden centered on a tidal pond is designated a National Place of Scenic Beauty.
• Other Sub-Temples — Several neighboring Zojoji sub-temples, including Myojoin and Jogyoin, also preserve registered cultural properties, allowing visitors to make a quiet walking tour of Edo-period sacred architecture.