A long board-marked concrete wall in low morning light, with one tall dark opening to the right of centre.

Walk through light.

A pavilion of five rooms, open from nine to noon.

Fictional exhibition by Office for Seventeen Degrees.

Scroll to enter

A narrow, high concrete corridor. A single blade of sunlight from a slot in the left wall crosses the floor and climbs the right wall.

Room 01 / 05 · 09:40 · Sun 28°

Slit

A line you can stand in.

The corridor is fourteen metres long and has one opening: a slot twelve centimetres wide. Stand still and the blade of light it throws moves past your feet — about eighty centimetres an hour.

Opening: 120 mm
Corridor: 14 m

A low hall of round columns, open on the right. Column shadows lie across the floor in stripes.

Room 02 / 05 · 10:20 · Sun 36°

Colonnade

Shadow, counted out in columns.

Twenty-four columns stand three metres apart. Their shadows are the only pattern in the room, and they are never in the same place twice.

Columns: 24
Spacing: 3.0 m

A white plaster room. Two shafts of light fall from a slot in the ceiling, one white and one orchid, onto the floor.

Room 03 / 05 · 11:00 · Sun 48°

Prism

The only colour in the building is light.

A single fin of dichroic glass splits the noon slot in two. Everything else is lime plaster — so the one colour you see here is not paint. It is light, and it moves.

Glass fin: 1
Ceiling: 9 m

Room 04 / 05 · 11:30 · Sun 62°

Stair

Quiet goes up.

The narrowest room is the quietest. Twenty-four steps, a skylight the width of a hand, and walls that brighten as you climb.

Steps: 24
Rise: 4.2 m

Looking straight up a tall plaster courtyard to a square opening in the roof, with a vertical shaft of noon light.

Room 05 / 05 · 12:00 · Sun 78°

Noon,
overhead.

The building ends where the sky starts.

Office for Seventeen Degrees

Ines Harrow · Tomas Belloni-Oda · Mira Lindqvist-Ade

A fictional practice that designs only with daylight: no lamps, no colour, no doors that close. Atrium is their fourth pavilion and the first you can walk on a screen.

Plan a visit

Plan a visit.

Open daily from nine until the light leaves the atrium — about ten past twelve.

Plan. The dotted line is the route this page walks — from the door to the oculus, about ninety metres.

Visitor information
Hours	09:00–12:10
Closed	On overcast days
Admission	18 (fictional)
Walk	About 25 minutes
Address	Quay 7, Harrow Basin (fictional)

Questions

Is Atrium a real building?

No. The pavilion, its architects and its address are fictional — this is a design template.

Can I walk it without scrolling?

Yes. The ticket’s room numbers and the plan are links; arrow keys and space work as usual.

Why does it close at noon?

After noon the sun is past the oculus. The architects consider the building finished for the day.

What if 3D doesn’t run on my device?

You get the same rooms as still photographs, in order.