Shangri La, the house that Duke built for herself in Hawaii in the 1930s, is not merely her own youthful version of a private utopia. With originality rare for the period, she included a number of authentically Islamic art. Something of the spirit of the house is evident from the outset: it's an arbitrary but enchanting mixture of Moroccan, Egyptian, Turkish, Syrian, and Persian motifs, bathed in shadow, glowing with coloured, half-lights, speckled with filigree, at once softened and set off by Hawaiian vegetarian in abundance.