A Celestial Figure Pressed into Clay
Most of what survives from Japan's earliest temples is stone, bronze, or weathered timber. The Tennin-mon Sen is something rarer: a single fired clay tile, a little under 40 centimeters on each side and roughly 8 centimeters thick, carrying the image of a heavenly being worked in low relief. It is said to have come out of the ground at Okadera, the temple set on a hillside above the old fields of Asuka in central Nara.
A sen (written 甎 or 磚) is a brick or facing tile of fired clay, a building technique that reached Japan from the Asian mainland. Plain versions paved floors. This one was made to be seen. One face is given over entirely to decoration: a flat border about 3.8 centimeters wide frames the panel, and inside it a single figure kneels, lifting a long scarf called a hire in both hands while turning its face up toward the sky.
The dating is not fully settled. The national cultural-property database of the Agency for Cultural Affairs lists the tile as Nara period. The Kyoto National Museum, which now holds the piece, places it earlier, in the latter half of the seventh century, at the close of the Asuka era. Either way it belongs to the first centuries of Buddhist building in Japan.
Why a Single Tile Became a National Treasure
The Tennin-mon Sen received state protection on December 28, 1897, under the Ancient Shrines and Temples Preservation Law, which placed it among the very first objects Japan chose to safeguard by law. It is now classed as an Important Cultural Property in the archaeological category, designation number 69, recorded simply as one piece.
Its value lies in its scarcity. Decorated clay tiles of this kind are almost unknown among Japanese finds. The one close relative is a phoenix-design tile, also said to come from Okadera and made in much the same way. Specialists at the Kyoto National Museum read the modeling of the figure as carrying influence from Silla, one of the kingdoms of the Korean peninsula, which links this small object to the wider current of continental craft flowing into Asuka-period temples.
There is also a question of where it once sat. The most likely explanation is that tiles like this were fitted into the koshi, the lower banded section of the shumidan, the raised platform on which a temple's main image stood. If so, the Tennin-mon Sen is a surviving fragment of how the inside of a seventh-century Japanese sanctuary was dressed, when an altar might be faced with rows of celestial figures rather than left bare.
Reading the Figure
Spend a moment with the relief and the small decisions of the maker come forward. The being does not stand or float in repose. It kneels, body slightly bent, both hands raised to hold up the scarf, the head tipped back. The heavenly garment, the ten'e, drapes and curls across the body. The hair is treated in two directions at once, some strands lifting upward and others falling, a detail that reads as motion. The intended impression is of a figure caught in the act of descending out of the air rather than posed on the ground.
One practical note for visitors. The original tile is kept at the Kyoto National Museum on deposit from Okadera, so it is not always on view; the museum rotates its archaeology displays. A faithful copy is enshrined at Okadera itself, which means the temple is the place to see the design in the setting it belongs to, while the genuine object waits behind glass in Kyoto when the schedule allows.
Okadera repays the climb on its own terms. Its principal image is a seated Nyoirin Kannon modeled in clay, standing roughly 4.6 meters high and counted as the largest clay statue in Japan. The temple gate and the shoin study hall are both Important Cultural Properties. In spring the slopes fill with rhododendron and peony.
Around Okadera and the Asuka Valley
Okadera, formally Ryūgaiji, sits in Asuka-mura in Takaichi District, the landscape where the early Japanese state took shape. Its founding is credited to the monk Gien, and the name Ryūgaiji comes from a local legend about a troublesome dragon sealed beneath a stone in the pond that still lies before the main hall. The temple is the seventh stop on the Saigoku Kannon pilgrimage and is remembered as one of Japan's first sites for warding off misfortune.
The valley around it holds some of the country's oldest history within walking or cycling distance: the great stone chamber of Ishibutai, the early temple ground of Asuka-dera, and the painted tombs of the area. The usual approach is by Kintetsu rail to Kashiharajingū-mae or Asuka station, then the Asuka loop bus toward the Okadera stop, with the last stretch on foot up a narrow lane; rental bicycles from the stations are a common alternative.
To see the tile rather than its copy, the trip is a different one. Check the current exhibition schedule of the Kyoto National Museum before going, since the original is shown only when the archaeology galleries call for it.
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Questions and Answers
- Where can I see the original Tennin-mon Sen?
- The original is held at the Kyoto National Museum, on deposit from Okadera. It is not on permanent display, as the museum rotates its archaeology galleries, so check the exhibition schedule in advance. A faithful copy is enshrined at Okadera in Asuka.
- What exactly is a "sen"?
- A sen is a fired clay brick or tile, a construction material that came to Japan from the Asian mainland. Plain ones were used for floors and paving. This example was decorated and probably set into the base of an altar platform inside a temple.
- How old is the tile?
- Sources differ. The Agency for Cultural Affairs database records it as Nara period, while the Kyoto National Museum dates it to the latter half of the seventh century, at the end of the Asuka period. Both place it in the early phase of Buddhist temple building in Japan.
- What does the relief actually show?
- A celestial being, or tennin, kneeling and lifting a long scarf in both hands with the face turned upward. The garment and hair are rendered in motion, suggesting a figure descending from the sky rather than standing still.
- Is Okadera worth visiting for more than this tile?
- Yes. Okadera holds the largest clay statue in Japan, a seated Nyoirin Kannon about 4.6 meters high, and is the seventh station of the Saigoku Kannon pilgrimage. Its gate and shoin are Important Cultural Properties, and the grounds are known for rhododendron and peony in spring.
Basic Information
| Name | Tennin-mon Sen (天人文甎); clay tile with a celestial-being design |
|---|---|
| Designation | Important Cultural Property (archaeological material), designation no. 69; one piece |
| Date of designation | December 28, 1897, under the Ancient Shrines and Temples Preservation Law |
| Period | Nara period (Agency for Cultural Affairs); latter half of the 7th century, late Asuka period (Kyoto National Museum) |
| Dimensions | Approximately 39 cm per side, about 8 cm thick |
| Provenance | Said to be excavated at Oka, Asuka-mura, Takaichi District, Nara (Okadera) |
| Holder | Okadera; on deposit at the Kyoto National Museum |
| Viewing | Original at the Kyoto National Museum (rotating display); replica enshrined at Okadera |
| Okadera address | 806 Oka, Asuka-mura, Takaichi-gun, Nara Prefecture |
References
- Tennin-mon Sen, Masterpieces collection, Kyoto National Museum
- https://www.kyohaku.go.jp/jp/collection/meihin/kouko/item10/
- Important Cultural Property: Tennin-mon Sen, Okadera official site
- https://www.okadera3307.com/about/jihou.html
- National Database of Designated Cultural Properties, Agency for Cultural Affairs
- https://kunishitei.bunka.go.jp/bsys/maindetails/201/9679
- Okadera (No. 7), Saigoku Thirty-Three Kannon Pilgrimage
- https://saikoku33.gr.jp/place/7
- Okadera, Asuka Village Tourism Portal
- https://asukamura.com/sightseeing/481/
Last verified: 2026.06.14