AN ADDRESS
The Salk Institute in La Jolla, where Louis Kahn turned an empty travertine plaza into a lesson in perspective.
SALK INSTITUTE FOR BIOLOGICAL STUDIES, LA JOLLA, CALIFORNIA. LOUIS I. KAHN, 1965. PHOTO: LIAO YUSHENG VIA ARCHDAILY.
In 1959, Jonas Salk asked Louis Kahn for a building worthy of a visit from Picasso. What Kahn gave him, on twenty-seven acres of coastal bluff in La Jolla, was something closer to a Roman forum: two mirror-image laboratory blocks, six stories each, flanking a travertine courtyard with nothing in it but a thin channel of water and the sky.
The courtyard was not always empty. Kahn had planned a garden. It was the Mexican architect Luis Barragán who told him to leave it bare: not one leaf, not one flower, not one fistful of earth. Make it a plaza, Barragán said, and you will gain a facade to the sky.
Kahn listened. The travertine became the floor of a room whose ceiling is the atmosphere itself.
A single channel, called the River of Life, cuts east to west through the stone. It carries a slow flow of reclaimed water toward the ocean. Stand at the east end and look down the axis: the two buildings converge in forced perspective, the channel narrows to a line, and the Pacific fills the vanishing point.
Architecture reduced to a diagram of sight.
VIEW FROM THE PORTICO TOWARD THE STUDY TOWERS. THE POZZOLANIC CONCRETE BEARS THE IMPRINT OF ITS PLYWOOD FORMWORK. PHOTO: LIAO YUSHENG VIA ARCHDAILY.
Twice a year, at the spring and fall equinoxes, the sun sets precisely along this axis. The water turns into a filament of light.
THE COURTYARD FROM THE WEST END. THE STUDY TOWERS STEP INTO THE PLAZA ON BOTH SIDES. PHOTO: LIAO YUSHENG VIA ARCHDAILY.
Kahn built the walls from pozzolanic concrete: volcanic ash mixed into the cement, a formula borrowed from Roman engineering. The result is a warm, faintly pink surface tone. The finish was left unground, unfilled, unpainted. Each panel retains the texture of the plywood forms it was cast against, coated in six layers of sanded resin before pouring.
Beside the concrete, teak frames the study tower windows. Untreated. Unsealed. Left to silver in the salt air. Sixty years on, both materials look as they did when construction ended. The building ages by weathering, not by decay.
Ten study towers angle their windows at forty-five degrees to the courtyard, directing every researcher’s gaze toward the sea. Between the towers, bridges cross over sunken lightwells that bring California daylight into two below-grade laboratory floors.
The references are monastic. Salk had spoken of cloisters, and Kahn delivered them: not as ornament but as operational logic. Collaboration happens in the open laboratories. Solitude belongs to the towers.
BRIDGES AND LIGHTWELLS BETWEEN THE STUDY TOWERS. THE INSTITUTE USES FIVE MATERIALS: CONCRETE, TEAK, TRAVERTINE, GLASS, STEEL. PHOTO: LIAO YUSHENG VIA ARCHDAILY.
There is almost nothing here that is not structure. No color beyond what the materials provide on their own: the warm grey of pozzolanic concrete, the silver of weathered teak, the off-white of Roman travertine, the blue of the Pacific at the end of the axis.
In 1992 the American Institute of Architects gave the Salk its Twenty-five Year Award. The building had not been renovated. It had simply continued.
The Salk Institute, La Jolla. 10010 North Torrey Pines Road.
Sources: Salk Institute for Biological Studies (salk.edu); ArchDaily; ArchEyes; Architecture Lab; Architectuul; Getty Conservation Institute.
— The Home&Decor Editors