On a trip to Rome, he ran into the sons of Cy Twombly and Paul Klee.

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One room is dedicated to paintings by contemporary artists such as Paul Klee.

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Apart from an impressive collection of work by Paul Klee, which Dr Djerassi still treasures, much of the rest was sold to found an artists' colony to commemorate his daughter, Pamela, whose artistic career was cut short by suicide.

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Anything after that might be a little anticlimactic, but the last large gallery provides a capsule view of the Bauhaus, with furniture by Marcel Breuer and Ludwig Mies van de Rohe, and paintings by Paul Klee, Oskar Schlemmer and Lyonel Feininger, among others, along with the occasional poster.

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