[6][7] In London he studied with Jeffrey Shaw (then a street artist), with whom he would later collaborate with on several projects.
[15] In it, and using various transportation including taxis and an airplane, van Tijen drew a line from the Institute for Contemporary Art in London to the Stedelijk Museum in Amsterdam, and from there to Rotterdam.
[8] With Robert Hartzema, he founded the Research Center Art Technology and Society in Amsterdam, which operated from 1967 to 1969.
[18] Van Tijen operated both centres as curator under the rubric of his Imaginary Museums project.
[19] In the 1980s van Tijen collaborated again with media artist Jeffrey Shaw on a project called the Imaginary Museum of the Revolution.