Church of the Light Case Study: Plan, Section and the Cross of Light (Tadao Ando)

The Church of the Light is the chapel of Ibaraki Kasugaoka Church in Ibaraki, Osaka Prefecture, Japan, designed by Tadao Ando and completed in 1989. It is a plain concrete box of about 113 m², cut by a freestanding wall set at an angle, with a cross-shaped slit in the altar wall as its only religious symbol. Below: the brief, site, plan, section, concrete, light, the 1999 Sunday school, what people said about it, and lessons for designers in India.

The brief: a small congregation and a tight budget

Ibaraki Kasugaoka Church already had a compound on the site. In a 2017 interview reported by Christian Today (Japan), Ando said the pastor asked him in 1987 to design a new chapel for ¥35 million. It was the bubble economy, and no contractor wanted the job at that price. Ando first proposed a timber building; the church asked for concrete, so that it would last.

Arquitectura Viva sums up the three conditions Ando worked under: a very tight budget, an ordinary suburban setting with scattered buildings, and a small plot. The account from Ando's own office, published as a Google Arts & Culture story by Tadao Ando Architect & Associates (TAAA), says the budget is why the building became a simple box. Ando was after "a primary space that remains after everything else has been stripped away".

The money nearly ran out before the roof was built, and Ando considered leaving the chapel open to the sky. The construction company then contributed funds and the building was finished as designed (TAAA). Ando described it as architecture made by "the power of collective will rather than economic reason".

Site and context: a suburban corner in Ibaraki

Arquitectura Viva places the site in a residential district of the Kyoto, Osaka and Kobe metropolitan region. The church describes itself on its welcome page as being in a quiet residential area, and says that the chapel, the hall and the pastor's house are all by Ando. The site is 839 m² (Archiweb).

Ando's answer to a plain suburb was the one he had used in his city houses: turn inwards and let the walls make the place. Kenneth Frampton, in his essay for Ando's 1995 Pritzker Prize, traces this to Ando's phrase "using walls to defeat walls" from 1978. At the chapel, TAAA notes, there is no direct entrance from the road.

Church of the Light concept: light set against darkness

Ando wrote in 1982 that "Light can only shine bright by being set against darkness" (quoted by TAAA). The chapel puts that sentence into a room: a dark concrete interior, one opening, and the opening shaped as a cross.

• References. TAAA says Ando drew on Romanesque monasteries, their cave-like rooms and the light through small windows.
• A series. Frampton groups it with the Rokko Chapel, the Church on the Water and the Children's Museum in Hyogo, four works he dates to 1985 to 1988, each treating light, water, wind and topography in a different way.
• Symbol by subtraction. The cross is the building's only Christian sign, and an abstract one (Arquitectura Viva).

For a longer reading, Jin Baek's Nothingness: Tadao Ando's Christian Sacred Space (Routledge, 2009) reads the chapel through Kitaro Nishida's philosophy of nothingness.

Church of the Light floor plan: one box, one wall, one route

Read the plan in three parts:

1. The box. TAAA describes a rectangular volume sized to hold three spheres 5,900 mm across, so in plan it is three squares in a row, about 5.9 m by 17.7 m by our arithmetic. Arquitectura Viva and Archiweb give the floor area as 113 m². The sources do not say whether the 5.9 m module is measured to the inside face or the wall centre lines, so do not dimension a drawing from the module alone.
2. The wall. A freestanding concrete wall pierces the box diagonally (TAAA). Archiweb gives the angle as 15 degrees, and Arquitectura Viva says the wall separates the entrance from the single-space worship hall. Where the wall passes through the box, narrow strips of light come in (Archiweb).
3. The route. There is no door on the road. A path takes you round the box, and you enter through the opening the angled wall makes (TAAA), then turn back to face the altar. The worship hall is a single room whose pews step down towards the altar.

Our diagram shows the idea, not Ando's drawing. For the architect's plans and sketches, credited to Tadao Ando Architect & Associates, see Archiweb's project page; the TAAA story above has the office's photographs, including Ando on site in 1988.

Church of the Light section: the dark room and the bright wall

In section the chapel is a single tall volume under a concrete roof slab. Two moves make it work:

• The floor steps down towards the front, so the rows of pews descend towards the altar wall (TAAA).
• The altar wall is cut by a cross. Frampton describes one incision "spanning the entire plane of the altar wall". Archiweb adds that the slit runs from floor to ceiling and from wall to wall, and lines up with the seams of the concrete.

The height is less certain. Secondary sources give 5.9 m, matching the plan module, but we found no primary source for it, and Christian Today reported Ando's 2017 full-size replica as about 6 m wide, 18 m deep and 7 m high. Treat the height as unconfirmed.

Church of the Light materials and construction

The material list is short, which was the point:

• Exposed reinforced concrete for walls, roof and the angled wall, left as cast inside and out (Archiweb, Arquitectura Viva).
• Timber from the site. The floor is made of scaffolding planks, painted black (TAAA), and the pews come from the same reused wood (Archiweb). In his 1999 text Ando says the worship hall was finished with black oil stain to deepen the darkness.
• Glass in the cross. Ando wanted the cross left open. The congregation did not, and the slit was glazed. More on that dispute below.

Frampton explains the finish. The character of Ando's concrete, he writes, depends on the spacing of the reinforcement, the care with which the concrete is placed and vibrated, and the precision of the timber formwork, which he links to the Japanese carpentry tradition Ando partly trained in. In photographs of the chapel you can read the formwork panel joints and the regular grid of tie holes, and the cross sits on those joints.

Light, climate and services

Daylight is the chapel's main service. TAAA notes that the light through the slits changes through the day, and that the black floor makes the cross stand out further. Arquitectura Viva describes the hall as bare, with no ornament and no heating or cooling equipment. We could not confirm whether anything has been added since, so treat that as a description of the building as designed.

The glass in the cross is a climate question as much as an aesthetic one. Ando proposed leaving the opening open to the weather; according to Dezeen (Jessica Mairs, 31 October 2017), the client refused because it would make the room inhospitable for the congregation.

The Sunday school (1999) and the pastor's house

A decade later the church asked Ando for a meeting hall, known as the Sunday school. Archiweb's entry for the Sunday school, which carries Ando's own 1999 text, gives these facts:

• Designed March 1997 to May 1998, built May 1998 to February 1999.
• Floor area 149 m², built-up area 117 m², on the same 839 m² site.
• A concrete box at the chapel's scale but of opposing shape. The space between them is a shared buffer with a curved porch and an outdoor stair.
• Inside, the mood is reversed: bright, with Japanese cedar floors and plywood furniture left natural, where the chapel is dark and black-stained.

Ando called the whole group "still unfinished" in 1999, because the old pastor's house might be rebuilt. Sources differ on what happened: Christian Today says a new pastor's house designed by Ando was built in 2010, while TAAA says he renovated the neighbouring residence.

Reception: critics, the congregation and visitors

Critics. Ando received the Pritzker Prize in 1995, and the Pritzker laureate page lists the Church of the Light among his works. Frampton called the chapel "an exemplary exercise in modesty and discretion", noting how a single cut turned a familiar symbol into an abstract one.

The glass. The disagreement between architect and client lasted decades. Ando told Dezeen that after completion he "visited regularly to convince the client to remove the glass", then gave up. For the exhibition Tadao Ando: Endeavors at the National Art Center, Tokyo (27 September to 18 December 2017), he built a full-size concrete replica with an open cross, and said the light and wind there felt much stronger than in the original. The church has kept its glass. Christian Today notes that of Ando's three churches of the period, this is the only one where services are held every week.

Visitors. The church's own Japanese home page lists what fame has cost a small congregation: theft, damage, trespassing, rubbish in the neighbourhood and complaints about photography. Its volunteer guides are elderly, several have died, and the church now runs at a deficit, which is why tours have stopped.

What designers in India can take from the Church of the Light

These are our reading, not claims from the sources.

1. Let the budget set the brief. One material, one opening and timber reused from the site's own scaffolding. On a small Indian community hall or prayer room, designing benches or a floor from the site's own shuttering timber is a real saving.
2. Exposed concrete is decided on drawings. The cross works because it sits on the formwork joints. On an Indian site, ask for a shuttering layout with panel joints and tie holes drawn, set every opening out on that grid, approve a mock-up panel before casting, and fix one source of cement and aggregate. Our guide to choosing between OPC, PPC and PSC cement covers the cement side.
3. Treat an unglazed opening as a climate decision. In Mumbai or Kochi an open slit lets in monsoon rain; in Delhi or Jaipur, dust and summer heat. If you want the effect without glass, draw the drip, the slope, the drain and an insect mesh from the start, as our waterproofing guide by climate explains.
4. Use the route on tight plots. A small prayer room, meditation hall or reading room on a 30 by 40 plot can still have an approach: walk past, slip in beside a wall, turn, then see the room. It costs one extra wall, not floor area.

If you are documenting the chapel for a studio, our case study method guide gives a sheet layout, and places of worship appear in our B.Arch thesis topics by typology. For comparison, our Kimbell Art Museum and Salk Institute case studies in this series show Louis Kahn's concrete and daylight a generation earlier.

Visiting the Church of the Light: reservation and tours

Check the church's website before you plan anything. As of its update on 24 September 2026, the Japanese page says:

• Regular building tours are fully suspended, with no date to restart; the church says it is considering reopening them temporarily.
• Sunday worship is open, but visitors must contact the church first through its inquiry form so numbers can be managed.
• Filming and photography for television, magazines and other media are not permitted.
• For the 2026 concert in the chapel, apply only through the concert page and come by public transport, not by car.

The English page (updated 2 March 2024) also says tours are suspended. If you do attend a service, remember it is a working church in a residential street.

Want to see how Indian studios handle concrete, light and small sacred spaces? Browse projects by MOA members.

FAQ

When was the Church of the Light built?

Ando was asked to design it in 1987, and it was completed in 1989. Some listings give completion as 1989 to 1990. The Sunday school hall next to it was finished in February 1999.

Who designed the Church of the Light?

Tadao Ando, the Osaka architect who won the Pritzker Prize in 1995, for Ibaraki Kasugaoka Church, a congregation of the United Church of Christ in Japan.

What materials were used in the Church of the Light?

Exposed reinforced concrete for the walls, roof and the angled wall; a floor and pews made from reused scaffolding planks stained black; and glass in the cross-shaped slit, which the congregation added against Ando's wish to leave it open.

What are the dimensions of the Church of the Light?

The floor area is 113 m² (about 1,216 sq ft) on an 839 m² site. Ando's office says the box is sized to hold three 5,900 mm spheres, which gives a plan of about 5.9 m by 17.7 m. We found no primary source for the height; the 2017 full-size replica was reported as about 7 m high.

Do you need a reservation to visit the Church of the Light?

Regular tours are suspended, according to the church's website. To attend Sunday worship you must contact the church through its inquiry form first. Check the website for any change before travelling.

Sources

• Ibaraki Kasugaoka Church: Japanese home page, notice on suspension of tours, updated 24 September 2026 (accessed 3 Nov 2026)
• Ibaraki Kasugaoka Church: English home page, updated 2 March 2024 (accessed 3 Nov 2026)
• Ibaraki Kasugaoka Church: Welcome to Ibaraki Kasugaoka Church (accessed 3 Nov 2026)
• Tadao Ando Architect & Associates on Google Arts & Culture, text by Shinichi Kawakatsu: The Church of the Light: A Cross of Light Floating in the Dark (accessed 3 Nov 2026)
• Arquitectura Viva: Church of Light in Ibaraki, Osaka (accessed 3 Nov 2026)
• Archiweb: Church of Light (accessed 3 Nov 2026)
• Archiweb: Sunday School, with text by Tadao Ando, 1999 (accessed 3 Nov 2026)
• Christian Today (Japan): The Church of the Light's worship space, experienced in Tokyo: Tadao Ando exhibition at the National Art Center, 29 September 2017, in Japanese (accessed 3 Nov 2026)
• Dezeen, Jessica Mairs: Tadao Ando creates full-scale mock-up of Church of the Light for Tokyo exhibition, 31 October 2017 (accessed 3 Nov 2026)
• The Pritzker Architecture Prize, Kenneth Frampton: Thoughts on Tadao Ando, 1995 laureate essay, pages 1 to 3 (accessed 3 Nov 2026)
• The Pritzker Architecture Prize: Tadao Ando, 1995 Laureate (accessed 3 Nov 2026)
• Routledge: Jin Baek, Nothingness: Tadao Ando's Christian Sacred Space, 2009, publisher's description (accessed 3 Nov 2026)