Opening of the Exploratorium

The Exploratorium opened in August 1969 on the grounds of San Francisco’s renovated Palace of Fine Arts, recasting scientific learning as something visitors could explore for themselves. Conceived by Frank and Jackie Oppenheimer after years of professional exclusion and inspired by science museums they visited in Europe, it became both a pioneering participatory museum and a public expression of Frank’s belief that understanding the world should empower everyone.

From exclusion to a new project

In 1959, ten years after his banishment, Frank Oppenheimer returned to academic life with an appointment in the physics department at the University of Colorado. A Guggenheim Fellowship in 1965 took him to University College in London for bubble-chamber research. While in Europe, he and Jackie visited several science museums, especially the Palais de la Découverte, where models made basic scientific concepts demonstrable. The visits suggested a different kind of institution: one in which children and adults could learn through direct engagement with physics, chemistry, and other fields.

Opening at the Palace of Fine Arts

Frank and Jackie developed their plans after returning to the United States. With grants from several foundations, the Exploratorium opened its doors in August 1969 at the renovated Palace of Fine Arts, a monumental exhibition hall built in 1915. Its location and form gave their idea a public home: science was presented not only for specialist study, but as something people could encounter and investigate themselves.

A participatory museum and family undertaking

The Exploratorium quickly became a showcase for the participatory museum movement, and Frank served as its charismatic director. Jackie and their son Michael worked closely with him, making the institution a family endeavor. Frank described its purpose as enabling people to believe they could understand the world around them. He connected scientific curiosity to civic understanding: when people give up trying to comprehend the physical world, he argued, they may also give up on understanding social and political life.

Public understanding as the legacy

Frank ran the museum as a “benevolent despot,” but its underlying ideal was egalitarian. The Exploratorium was meant to make understanding a source of empowerment and pleasure for all, rather than an instrument of power reserved for a few. In that sense, its opening gathered the brothers’ commitments to science, art, and politics into a public institution: scientific knowledge became not merely something to possess, but something visitors could approach and learn to use.